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Is the wave function Ψ in Schrödinger's equation iℏ[(∂Ψ)/(∂t)]=H^Ψ a physical entity (ontic) or a knowledge-based construct (epistemic)? Ontic views, such as Many-Worlds, imply ∣Ψ∣^2 reflects real-world probabilities, while epistemic interpretations, like QBism, suggest Ψ represents an observer's belief. This distinction impacts the interpretation of collapse, measurement, and nonlocality.
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For a photon, or perhaps an ensemble of photons, the electric field, which is measurable, is proportional to Ψ. Its square is proportional to the probability of measuring a photon there, I think. It was a surprise to me that something so ordinary as voltage gradient had the same properties as the root of probability which seemed a very strange concept. I lean towards Ψ being ontic, which think electric field is.
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The placebo effect demonstrates significant variability between individuals, influenced by factors such as belief, expectation, emotional state, and neurological differences. This raises an intriguing question: could the observer effect in quantum mechanics also vary depending on the observer?
In quantum mechanics, the observer effect describes how the act of measurement alters a system, such as collapsing a wave function. Most interpretations treat the observer as a neutral or uniform entity, often using instruments to minimize human influence. However, if the observer's consciousness or state of mind plays any role in the measurement process (as some interpretations like Wheeler’s Participatory Universe suggest), could different observers have varying degrees of influence on quantum systems?
Key questions I would like to explore:
  1. Could intentionality, focus, or awareness of the observer affect the outcome of quantum measurements?
  2. Are there any experimental setups where observer variability (e.g., emotional state, belief in the experiment’s outcome) could be tested as a factor in quantum behavior?
  3. Are there existing studies or evidence in quantum mechanics, neuroscience, or psychology that suggest a link between individual consciousness and observer effects?
  4. How might we isolate and test human influence in systems where instruments currently standardize observation?
I am interested in any theoretical, experimental, or interdisciplinary perspectives that might help address this question. Does this idea hold merit, and if so, what methodologies could be applied to test it?
Thank you for your insights!
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This myth that human consciousness can somehow "collapse" a wave function persists, even though it has long been scientifically refuted. Early quantum physicists such as Niels Bohr or Werner Heisenberg used terms such as "observation", which led to confusion. Some believed this was literal, as if the human mind influenced reality. This is of course not so.
Measuring devices should be built independently of any personal whims, calibrated orderly and also tested so that they actually measure what they are supposed to. So there is unlikely to be a “placebo effect”. If it does happen, I wouldn't call it the "placebo effect", but simply human error. So there is hardly any need to philosophize about how such technical errors come about. And you certainly don't need special psychologists to hold your hand and accompany you emotionally through the construction.
If errors still appear, it is more likely due to the environment. But that is no longer part of the measuring device.
And (I am sorry to speak it out as it is) the rest is absolute nonsense.
I can only advise you to eliminate such nonsense from your brain as quickly as you can and concentrate on what is important. It might be fun to binge your head with some esoteric YouTube videos and stuff portrait on social media. But don't let such fake information confuse you. That doesn't get you anywhere personally.
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I have a question on general/special relativity for a realistic situation. I looked for the answer to find the answer on the internet which is summarized here, but found it hard to accept for the reason given here.
Suppose
1) There is Earth whose radius is /R/ and mass /M/, for simplicity the Earth is sphere, and no rotation and no revolution around the sun. (for simplicity, lets say the earth is a point mass and R=0)
2) There is a significantly tall mountain on the Earth whose height is /r/. There stands the observer A.
3) A satellite of mass /m/ (M >> m) is orbiting the earth at altitude /r/, i.e., it passes right through the observer A every time it orbits. On the satellite is the observer B.
4) Also suppose there is an observer at the surface of the earth, the observer C.
5) (optional) Suppose there is an alien observer D, far away from the gravity, staying still relative to the Earth, not accelerating.
What is a time delay between A and B?
The internet only has comparison between B and C. it says, with some realistic parameters, there are two effects cancelling each other, namely
a) time delay due to gravity difference (general relativity) - difference between gravitational delay for B (at R+r) and C (at R) ~ B clock gains 45 microseconds/day :: This, I understand. OK, let's call this the general effect.
b) time delay as B is fast moving against C (special relativity) - due to velocity time loss B clock lose 7 microseconds/day :: Hmm...?? Shouldn't the effect be symmetric? You may also say C is fast moving against B. I don't think this affects the time delay. -> let's call this the special effect.
=> Thus the internet concludes the net time gain is :: B clock runs faster by 45-7=38 microseconds/day against C.
I don't understand regarding b) explanation.
Let's say, for simplicity R=0, and compare A (one on the mountain at /r/) and B (satellite at /r/).
From A's point:
- The general effect is valid, but as A and B are of same altitude (same gravitational potential), there is no time difference between A and B in terms of gravitational dilation. (cf. yes, B and C (one at the surface) will have difference => Let's say this delay rate is /delta/.)
- As B is orbiting, it accelerates, and this acceleration produces the effect of minus /delta/, which is the exact opposite.
=> Thus, the clock A lags behind at the rate of /delta/
From B's point
- The satellite B is free-falling, which means B feels no acceleration (may think s/he's still or at constant velocity; locally inertial). (So B's clock ticks same as D,) and there is no time delay for B.
- The one the mountain, A, is under the influence of gravity, so the clock delays at the rate of /delta/.
=> Thus, the clock A lags behind at the rate of /delta/
However, if you follow the internet argument, the difference should be "/delta/ - (cancellation due to fast motion)" rather than "/delta/".
Which is correct? Thank you for your insight.
(further stupid question) If there is nothing else in the space, but the point mass Earth and two observers B (satellite) and D (alien), Can B and D conclude who's actually orbiting (moving)?
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Your question touches on a variety of subtle concepts in general and special relativity, particularly the way time dilation effects interplay in different gravitational and inertial reference frames. Let's go through your points one by one to clarify the issues, starting with the two key effects you mentioned:
1. Gravitational Time Dilation (General Relativity)
This is the effect where clocks run slower in stronger gravitational fields. The general effect you're referencing between observers A (on the mountain) and B (in orbit) is due to the difference in gravitational potential. Since both A and B are at the same altitude (r), you are right that there is no difference in gravitational time dilation between them. Both A and B are subject to the same gravitational potential (because they're at the same radial distance from the center of Earth), so there is no gravitational time dilation between A and B. This means that the time dilation due to gravity between A and B is zero.
Now, for comparison:
C (at Earth's surface) is in a stronger gravitational field than A or B, so C’s clock runs slower due to gravitational time dilation compared to A and B. This causes a time difference between C and B (or A).
2. Special Relativistic Time Dilation (Due to Velocity)
This effect is because objects moving relative to one another experience time differently. From your description:
B (the satellite) is orbiting and moving at a significant velocity relative to A (on the mountain). This causes special relativistic time dilation, where B’s clock ticks more slowly from A’s perspective. The velocity of the satellite causes this time dilation, but only when considering special relativity.
The internet explanation suggests that B's clock loses time relative to C due to B's orbital velocity. However, as you rightly pointed out, if we apply this reasoning symmetrically, there should also be an effect on A due to the velocity difference between A and B.
3. Symmetry of Special Relativistic Effects
Here’s where confusion arises. The special relativistic time dilation effect is not symmetric between A and B in the same way that gravitational time dilation is not symmetric in the Earth-frame. From B’s perspective, A is moving, and thus A’s clock would appear to tick slower. Similarly, from A’s perspective, B is moving and would experience time dilation as well. However, the difference between A and B's velocities is much smaller than the difference between B’s velocity and C’s velocity, so the net special relativistic effect is much smaller between A and B than it is between B and C.
4. Why is the Special Relativistic Time Dilation Effect Between A and B Negligible?
The key point here is that both A and B are moving in the same gravitational field. The only difference is that B is moving very fast in orbit, while A is stationary on the mountain. In relativity, the key is not just the relative motion but also the acceleration and the reference frame you're considering. B’s orbit involves an inertial frame (at least locally), whereas A, being on Earth, is under the influence of Earth's gravity and is not in an inertial frame. This creates the apparent discrepancy between the effects.
If we are trying to directly compare the clocks of A and B:
Gravitational time dilation: There’s no effect because A and B are at the same radial distance from the center of Earth (the same gravitational potential).
Special relativistic time dilation: A's and B's relative motion is small compared to B’s motion relative to C, so this effect is very small between A and B.
5. Conclusion About Time Difference Between A and B
You’re correct to point out that the net effect between A and B should primarily come from their relative velocities. Since B is moving very fast relative to A, it’s the special relativistic time dilation that would cause a very tiny difference. But the difference between A and B will be very small compared to B and C.
Final Clarification:
To summarize the net time difference:
Gravitational time dilation between A and B: 0 (same gravitational potential).
Special relativistic time dilation: A and B experience a small difference because of their relative velocity, but this is negligible compared to the effect between B and C.
Thus, the net effect on B's clock compared to A’s will be a small time dilation due to velocity (special relativity). There’s no cancellation of effects as suggested by the internet; the effects are additive and non-zero between A and B, but very small.
Further Question: Can B and D Tell Who's Orbiting?
In a simplified scenario where only Earth (a point mass) and two observers, B (in orbit) and D (far away), are involved:
B (the satellite) is in orbit and feels a centripetal force, so it is accelerating in its own frame (from the perspective of an inertial observer, it’s in free fall).
D, far away from any gravitational sources, would be stationary in a uniform inertial frame.
B and D cannot tell who is moving relative to whom without additional information. In general relativity, motion is relative, and there is no absolute frame of rest. However, if B were to emit a signal, D could detect the Doppler shift of the signal, indicating that B is moving relative to D. But this is based on relative motion, not absolute motion.
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The Schwarzschild metric describes the gravitational field of a spherical body. The special theory of relativity, based on Lorentz transformations, has a number of experimental confirmations. Is it possible to apply Lorentz transformations to the Schwarzschild metric? This was done
for the linearized isotropic Schwarzschild metric and the geodesic equations for the resulting metric were found. When using them to analyze the frequency shift data of the Pioneer 10 signal, it is concluded that the annual frequency variations are caused by a change in the velocity of the time flow on the apparatus from the point of view of an observer on Earth.
The resulting metric is used to determine the active gravitational mass of a cloud of rarefied gas of relativistic particles.
As the velocity of particles approaches the light velocity, this mass increases indefinitely compared to their total relativistic mass. This result can be extended to relic neutrinos. Since the minimum rest mass of neutrinos is not found, this leaves open the possibility that they may make up a most of dark energy.
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It doesn't make sense to apply Lorentz transformations to the Schwarzschild-or any, curved-metric. Lorentz transformations, by definition, are those transformations that leave the flat-Minkowski-metric invariant. They don't and can't leave a curved metric invariant.
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7) How is Einstein's world of relativity?
Abstract—If time is forced to be relative as Einstein did in Special Relativity, the Relativity Factor or the Time Dilation Factor will not be constant for an inertial frame and the relative time will be directional and dependent on the angle to the direction of motion of the frame and hence there are infinitely many relativity factors for an inertial frame. The path of light can only be altered by the change of medium. The path of light cannot be altered relative to observers, both internal and external. A vertically moving arrow in a moving train is vertical relative to all observers. A vertically moving arrow does not tilt relative to observers both on the train and off the train. A Light burst is a massless and momentumless arrow. The time it takes for an arrow to hit the ceiling is not relative. Average Relativity Factor in Special Relativity for forward and return time is not applicable for one-way motion. Einstein’s lateral plane Relativity Factor cannot be forced onto other directions for one-way motion. Einstein’s Relativity Factor that was derived for a direction orthogonal to the motion of the frame is not constant for the entire inertial frame. If time is relative, time will be directional and depends on the angle to the direction of motion of the frame and the polarity of the speed of the frame. Directional motion cannot generate non-directional time or a non-directional Relativity Factor. Time must be non-directional and hence cannot be relative. In Special Relativity, Einstein forced the lateral plane Relativity Factor onto the direction of motion of the frame by redefining the time as the average forward and backward time of a beam of light, and by forcing the average forward and backward length in the direction of motion to contract by the inverse of the lateral plane Relativity Factor. The forcing of Einstein’s Relativity Factor, which was derived for a direction orthogonal to the direction of motion of the frame, onto the direction of motion of the frame cannot make it the constant Relativity Factor for the entire frame. Special Relativity is self-contradictory. A theory that claims that the speed of light is observer independent cannot contain the terms (c-v) and (c+v). The Relativity Factor in Special Relativity contains the terms (c-v) and (c+v). The terms (c-v) and (c+v) cannot exist unless the speed of light is observer dependent. The presence of both terms (c-v) and (c+v) also indicates that Special Relativity is based on the average forward and return motion. Real-time systems do not operate on average forward and return dynamics. Special Relativity cannot describe real-time systems that operate on instantaneous time. The average has to be calculated off-line by taking separate measurements for forward and reverse motion. Average is not available for measurement. Average does not exist for instantaneous time. On-line systems do not run on average forward and return time of a beam of light. Motion dynamics of an object is not determined by the average forward and backward motion. A theory based on average forward and return time, and average forward and return length contraction cannot model real-time systems that run on one-way instantaneous time and one-way instantaneous distance. Dynamic systems do not operate on average forward and return motion dynamics. A moving object has no information on the average forward and return time and the average forward and return distance. Clocks do not run on the average forward and return time of a beam of light. Clocks are incompatible with Special Relativity. Measuring sticks do not measure average forward and backward travel distance. Time is a definition. Clocks do not determine the time. We define a time width, a day or a year, and engineer clocks to break it down into finer intervals. Clocks measure time delay, not the time itself, Time delay is independent of an instance of time. Distance traveled is independent of space coordinates. Space and time cannot be brought into the equation. Average forward and backward time and length exist on paper in textbooks, not in real-time dynamic systems. Special Relativity exists on paper as both mathematically and conceptually invalid theory, not as a dynamic system that operates in nature. The forcing of Einstein’s Relativity Factor, which is derived for a direction orthogonal to the motion of the frame, onto the direction of motion of the frame cannot make it the Relativity Factorfor all the other infinitely many directions. Einstein’s Relativity Factor that is derived for one direction and forced onto one more direction is not applicable for infinitely many other directions. Einstein’s Relativity Factor is the Relativity Factor only for the directions orthogonal to the direction of motion of the frame. There is no one single constant Relativity Factor for an entire frame. Relativity Factor is direction dependent. If time is assumed to be relative, relative time is directional. A non-directional relative time cannot be generated by directional motion. Time must be non-directional. Time dilation is not necessary in Special Relativity. Special Relativity without time dilation is possible. Time does not have to be relative in Special Relativity since the relative time can be made absolute by allowing angle dependent contraction in all directions. If the distance at any angle is allowed to contract by the inverse of the Relativity Factor at that angle, the time will be absolute, frame independent. The mass of an object is absolute and frame independent. The mass of an object is not determined by observers. Observers measure the mass. If the measured mass of an object varies with its speed, it is the measuring instrument that is speed dependent, not the mass itself. What is relative is the measuring instrument, not what is being measured. The rate of a clock is not determined by observers; it is determined by engineers. The path of a moving entity is not determined by observers. It is the relative position of the path that is displaced against the observer motion while the path remains unaltered. Relative displacement of the path relative to observers does not alter the path and the speed of an entity on its path. Observers cannot derail trains. Special Relativity does not deal with space and time. What Special Relativity deals with is the distance traveled and the time delay taken to travel the distance. The distance traveled and the time delay taken to travel the distance are independent of the coordinates in space and instances of time. Distance-delay is not spacetime. Space and time are mutually independent. Space and time cannot be brought to the equation since there is no frame of reference independent of space and time. Time is independent of space coordinates. The massless has no momentum. Light does not have momentum and does not behave as golf balls. Emission of light cannot generate momentum. There is no radiation pressure on a radiation-source in a vacuum. The radiation pressure is due to the temperature gradient generated by emitted electromagnetic waves in the presence of medium, charge particles. Light cannot generate energy, temperature, and pressure in a vacuum. In Special Relativity, the derivation of momentum and energy relationships based on radiation pressure are invalid, and the mass of an object is not relative. Light cannot be forced upon a momentum by proclamation. If the mass of an object is relative, the energy will not be real and unique. The rest energy of an object of mass m in Special Relativity is imaginary, E=j(mc)c. Light cannot be relative since both the speed and the path of light are constants that can only be altered by the change of the medium. An entity that has no standstill existence cannot have momentum. Light does not propagate relative to observers since light has no momentum. Maxwell equations cannot be transformed onto an inertial frame. The Lorentz Transform cannot transform Maxwell equations onto an inertial frame uniquely. If the Lorentz Transform is used for the transformation of Maxwell equations, the magnitudes of transformed electromagnetic fields are unbounded as the speed of the frame reaches the speed of light. Neither the direction nor the speed of light can be altered relative to observers or gravity. Gravity has no effect on light in the absence of a medium. Gravity has no effect on the massless.
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Dear Abbas Mr. Einstein's relativity is about one sun, one moon and our earth, it is not universal science.
Our universe has billions of galaxies, where each galaxy holds billions of solar systems like ours.
Yet Einstein's science everyone wrongly think is a universal thing, but he model our solar system mathematically with one -dimension static for three-dimension of nature that it is clanging constantly
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How do you handle the issue of observer bias in your research?
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About time dilation. We remember the descriptive diagram which includes, for example, the train which moves at a speed "v". The two mirrors installed in the train between which a beam of light circulates constantly. There is also an external observer who, according to the descriptive diagram, observes what is happening. According to Einstein this observer who is outside the train, this observer being stationary, observes that the time it takes the light to travel the distance between the two mirrors dilates! In my opinion we cannot observe a dilation of time, moreover we do not yet know what is the definition or the concept of time is!!! In my opinion the outside observer can notice that the speed of light is a constant which is, c,!! But according to me the light circulating between the two mirrors "sees" its time dilates because of the speed of the train!! thus the speed of light circulating between the two mirrors is no longer, c, but less than, c!!! And in my opinion, light has an intrinsic property which is the dilation and each dilation corresponds to a reduction in its speed so that it becomes less than, c! and in my opinion this must be the principle of atomic clocks which delay when they are moving at one speed, v!! In other words it is not gravity that slows down an atomic clock in mouvement at a speed, v !!
What people thing about this problem?
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Although this is not in my field of expertise, i feel the urge to elaborate. hope you'll find a satisfactory answer in my hypothesis bellow.
Theoretically, based on both the Special Relativity and the General Relativity, light itself does not have a temporal property in the sense of being able to dilate time.
Time dilation, as described by Einstein's theory of relativity, occurs due to the relative motion between observers or the presence of gravitational fields.
Light itself travels at a constant speed (approximately 299,792,458 meters per second in vacuum), and from its own perspective, it experiences no passage of time because, according to relativity, time does not pass for massless particles like photons.
Until a superior theory emerges, we can agree that light itself does not cause time dilation. Instead, time dilation effects manifest when comparing the experiences of observers in various frames of reference (due to relative motion) or at different gravitational potentials.
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"How do we understand special relativity?"
The Quantum FFF Model differences: What are the main differences of Q-FFFTheory with the standard model? 1, A Fermion repelling- and producing electric dark matter black hole. 2, An electric dark matter black hole splitting Big Bang with a 12x distant symmetric instant entangled raspberry multiverse result, each with copy Lyman Alpha forests. 3, Fermions are real propeller shaped rigid convertible strings with dual spin and also instant multiverse entanglement ( Charge Parity symmetric) . 4, The vacuum is a dense tetrahedral shaped lattice with dual oscillating massless Higgs particles ( dark energy). 5, All particles have consciousness by their instant entanglement relation between 12 copy universes, however, humans have about 500 m.sec retardation to veto an act. ( Benjamin Libet) It was Abdus Salam who proposed that quarks and leptons should have a sub-quantum level structure, and that they are compound hardrock particles with a specific non-zero sized form. Jean Paul Vigier postulated that quarks and leptons are "pushed around" by an energetic sea of vacuum particles. 6 David Bohm suggested in contrast with The "Copenhagen interpretation", that reality is not created by the eye of the human observer, and second: elementary particles should be "guided by a pilot wave". John Bell argued that the motion of mass related to the surrounding vacuum reference frame, should originate real "Lorentz-transformations", and also real relativistic measurable contraction. Richard Feynman postulated the idea of an all pervading energetic quantum vacuum. He rejected it, because it should originate resistance for every mass in motion, relative to the reference frame of the quantum vacuum. However, I postulate the strange and counter intuitive possibility, that this resistance for mass in motion, can be compensated, if we combine the ideas of Vigier, Bell, Bohm and Salam, and a new dual universal Bohmian "pilot wave", which is interpreted as the EPR correlation (or Big Bang entanglement) between individual elementary anti-mirror particles, living in dual universes.
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Wolfgang Konle added a reply
April 17
Fred-Rick Schermer "He (Einstein) used the term Spacetime to help declare aspects about the gravitational effects of matter, in specifics the anomalies as for instance seen with the perihelion of Mercury."
Spacetime is a term in relativity theory which only indicates that the structure of space and time is related.
"Once a person accepts that matter came about in the Big Bang model, then one cannot declare at the same time that unification is real as well."
The big bang model is bullshit.
The only relevant model is about an eternal universe. Instead of a big bang only cyclic bangs happen, which affect about 10% of the mass of the universe. The restricted cyclic bangs release astronomic signs, which we misinterprete as traces of a big bang.
The cyclic bangs resolve all black holes, once every 20 billion years, and retransform their matter to new star fuel.
All arguments against that model of the eternal cyclic universe can be disproven in a factual way.
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Sergey Shevchenko added a reply
April 17
The thread question rather in detail is scientifically answered in SS 5 posts series on page 1.
Dear Fred-Rick
- in that
“…Matter’s spacetime is fundamentally absolute."
I fully agree here but only if I understand you correctly. It is matter that is the source for spacetime; space and time are actually not part of the discussion. Rather, all words apply to the behavior of matter and nothing of these words applies to space or time. though the words are implying they are...”
- you understand what is in the SS posts above correctly, however only in certain sense, though.
To understand more it is necessary to read at least first few pages in https://www.researchgate.net/publication/354418793_The_Informational_Conception_and_the_Base_of_Physics, where it is explained what are absolutely fundamental phenomena/notions “Space” and “Time”; and their concrete actualizations in every concrete informational pattern/system - concrete spaces and time
[ while in the Shevchenko-Tokarevsky’s philosophical 2007 “The Information as Absolute” conception, recent version of the basic paper see
- it is rigorously proven that there exist nothing else than some informational patterns/systems of the patterns that are elements of the absolutely fundamental and absolutely infinite “Information” Set; including Matter is nothing else that some the Set’s element.
At that the utmost general definition of the absolutely fundamental phenomenon/notion “Information” is
“Information is something that is constructed in accordance with the set/system of absolutely fundamental Rules, Possibilities, Quantities, etc. – the set/system “Logos” in the conception” .]
I.e. the “Logos” set elements “make something to be an information”, and any/every concrete pattern/system, including Matter, is made absolutely obligatorily by some concrete “composition of the “Logos” elements actualizations”.
“Space” and “Time” are just the “Logos” set [besides any informational pattern/system “is made” also, first of all, by “Logos” elements “Energy”, “Change”, “Logical Rules”] and their actualizations in concrete cases are concrete space, that can have any number of concrete “space dimensions” [the number is equal to number of degreases of freedom at change of state of a pattern/system], and the unique in the Set “time dimension”.
Any concrete pattern/system can exist and change, in a system its elements interact, etc., only in its concrete space and time.
So, including any “behavior of matter” is possible only in some space, Matter is rather simple logical system that is based on binary reversible logics, and so Matter’s utmost universal space has 4 dimensions – X,Y,Z are necessary – “allow” to make binary operations, - dimension allows reverse binary operation.
Correspodingly the space and time intervals between elements, motion of elements in space and time dimensions, etc., are absolutely necessary for existence of everything in Matter –
- and at description and analysis of what exists and happens in Matter. If you don’t know these data, you by no means can describe and analyze “behavior of matter”.
Besides, really it is fundamentally senseless to ask “what appeared earlier – Matter or its spacetime”, Matter could appeared only in its spacetime, which – as logical possibility to create, and to exist of, Matter – existed as a part of the Set’s spacetime, which contains all spaces of all Its elements – and one time dimension;
- while the Set exists absolutely “eternally”, having no Beginning and no End, since absolutely fundamentally - logically - cannot be non-existent.
Cheers
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Fred-Rick Schermer added a reply
April 18
Wolfgang Konle
Thank you, Wolfgang, I understand better now where you are coming from.
The model you embrace is not the model I embrace, and this helps us understand what each of us is saying.
I do not support the cyclic universe; it was a one-time event in which the prior state broke at a fundamental level. Hence my saying that, once we have an omelet, we know that the egg was broken. There is no return to the original state available.
An eternal universe requires that we have evidence for that eternal aspect. We do not have that evidence. I will not stand in non-scientific grounds. I will only stand with my feet on the ground (even when that is on a planet floating through space) and I will not stand with my feet on space.
It is illogical to have matter be eternal. There is no indication that matter is eternal, rather we have a clear understanding that matter did begin with hydrogen (and helium), and how all other elements arrived in various subsequent fashions.
Matter returning to an immaterial state is not supported by scientific evidence. At best, it can be read in models, but then we need to discuss the value of these models. I am not convinced that black holes are actually real, but that is a different discussion.
I am standing with the scientific evidence, Wolfgang. I do not extrapolate it into additional dimensions. I may not be the best scientist, but I will not stand outside the scientific realm.
Thank you again for explaining where you are standing.
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Cosmin Visan added a reply
20 hours ago
Spacetime doesn't exist. "Spacetime" is just an idea in consciousness.
… Read more
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Wolfgang Konle added a reply
15 hours ago
Fred-Rick Schermer "It is illogical to have matter be eternal. There is no indication that matter is eternal, rather we have a clear understanding that matter did begin with hydrogen (and helium), and how all other elements arrived in various subsequent fashions."
We do not have the faintest valid explanation about a possible creation of electrons and protons without the simultaneous creation of positrons and antiprotons.
This fact and the unlimited lifetime of electrons and most atomic nuclei leaves us with the only possible conclusion that matter must be and must have been eternal.
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Fred-Rick Schermer added a reply
13 hours ago
Wolfgang Konle
Thank you for that answer, Wolfgang. We are not thinking fully along the same lines. That is very clarifying; after all, communication is difficult enough.
Let me find out if this is about language or if we really say something else.
I can say that the unlimited lifetime of electrons points to a potentially eternal nature of Energy. This is what you may want to say, but you placed eternal with Matter, which is in my model not possible.
If the transformation of Energy into Matter occurred some 13.8 billion years ago, then the term eternal cannot be applied to Matter. A (fundamental) transformation undermines being able to use the word eternal.
It is not known how old Energy is, so I cannot make the claim that Energy is, or is not eternal. We just don't know. Yet Matter is a result. We know therefore that it cannot be eternal; it was produced at one point in time, something new got produced from something old(er).
--
In my model, I do not need to start with the same amount of matter as antimatter because the starting point for matter begins under extreme circumstances. It is not an ordinary circumstance. Antimatter will occur, but it is a circumstantial byproduct.
We can discuss this further if you want, but the special circumstance is more interesting now.
There was a special circumstance in which the prior normal conditions of whatever or however energy existed before caused itself to move toward that special circumstance. This could have been done in a happenstance manner, or in a directed manner. But it was a step that led to a fundamental undermining, with either option we pick.
As a consequence, (some) original energy got deformed during these special conditions, and a quark soup got created (to keep the storyline simple). Then, the special conditions were reversed, everything back to normal, yet the deformed quarks were not able to return to their original state. They were and are deformed packages of original energy.
The reversal of the special conditions occurred at the CMBR, when conditions were normal again. Here the quarks aligned themselves immediately into neutrons and protons.
That is the point Zeus overthrew Cronus, if you allow me to throw in some Greek mythology as support that I am not thinking up something structurally never considered before. Where immaterial Energy was first the only circumstance for energy, with the transformation of some energy into quarks, they actually took the lead.
Matter became the center of energy (quarks in nuclei of atoms). Everything else remaining in the original energized state then falling in place, aligning themselves with the quarks in the center.
Yes, electrons then also part of the original immaterial energy, but then pulled into the deformed reality of the energized quarks, causing the tip of that iceberg to become material.
Preprint On Quarks Explaining Our Universe
Cosmin Visan added a reply:::
Wolfgang Konle Matter doesn't exist. "Matter" is just an idea in consciousness.
Cosmin Visan added a reply:::
Fred-Rick Schermer You really do have a communication problem. Have you tried a psychotherapist ?
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It's not so typical Einstein, since he was concerned with curved spaces and more deterministic physics. Reading this, I remembered changing time for some plants at home, with magnets. They don't grow so fast, and need not so much water. In honour of Einstein, an area format for modeling is given in my latest paper.
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One of the open (and unanswered thus far) questions in science is this: Why does the world look the way it does.
This fundamental epistemological question appears in numerous scientific contexts, some that have always intrigued me being the following: why all biological organisms have the shape they do? For example, why are there lions, tigers and bears along with humans and all other animals and plants one encounters on Earth, and have the form they do and carry out the functions they do at present and over the course of their evolution?
Why does water (and in fact any simple or complex chemical compound) have the chemical composition that it has, according to a chemist or physicist?
Why are there bosons, or any other elementary particles, above or below the scale an observer has been able to reach and observe thus far?
And more broadly: Why does the Universe (and all its elements), look to an observer like it does (and they do), and it has (and they have) evolved to exist in the manner, form and functions that it does (and they do), i.e., as it does (and they do) appear to an observer at our scale of existence and from our point of view?
These are basically existential/epistemological questions, since they involve "why's". Science usually is structured so that it poses questions starting with "how's". Yet, that doesn't necessarily imply that an epistemologist should not try to answer such "why's", without resorting to religion or untamed, undisciplined philosophy.
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Thank you for your response. Yes, I find it a challenge to ask "why" type questions about Nature and Reality and get answers that do not involve either Religion or unproductive philosophical arguments.
Deriving systematic, scientific responses to "why" type queries about the Universe at all its scales remain unresolved to this day. Maybe it is not resolvable from an epistemological viewpoint.
However, I'm (and I will remain) an optimist, thus I posed the question.
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"How do we understand special relativity?"
The Quantum FFF Model differences: What are the main differences of Q-FFFTheory with the standard model? 1, A Fermion repelling- and producing electric dark matter black hole. 2, An electric dark matter black hole splitting Big Bang with a 12x distant symmetric instant entangled raspberry multiverse result, each with copy Lyman Alpha forests. 3, Fermions are real propeller shaped rigid convertible strings with dual spin and also instant multiverse entanglement ( Charge Parity symmetric) . 4, The vacuum is a dense tetrahedral shaped lattice with dual oscillating massless Higgs particles ( dark energy). 5, All particles have consciousness by their instant entanglement relation between 12 copy universes, however, humans have about 500 m.sec retardation to veto an act. ( Benjamin Libet) It was Abdus Salam who proposed that quarks and leptons should have a sub-quantum level structure, and that they are compound hardrock particles with a specific non-zero sized form. Jean Paul Vigier postulated that quarks and leptons are "pushed around" by an energetic sea of vacuum particles. 6 David Bohm suggested in contrast with The "Copenhagen interpretation", that reality is not created by the eye of the human observer, and second: elementary particles should be "guided by a pilot wave". John Bell argued that the motion of mass related to the surrounding vacuum reference frame, should originate real "Lorentz-transformations", and also real relativistic measurable contraction. Richard Feynman postulated the idea of an all pervading energetic quantum vacuum. He rejected it, because it should originate resistance for every mass in motion, relative to the reference frame of the quantum vacuum. However, I postulate the strange and counter intuitive possibility, that this resistance for mass in motion, can be compensated, if we combine the ideas of Vigier, Bell, Bohm and Salam, and a new dual universal Bohmian "pilot wave", which is interpreted as the EPR correlation (or Big Bang entanglement) between individual elementary anti-mirror particles, living in dual universes.
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Wolfgang Konle added a reply
5 days ago
Fred-Rick Schermer "It does not explain how all got started up, but then again I also have Energy as a given. I recognize your model as complete on its own, leaving some aspects unexplained."
Good question, an answer and some additional explanations can be given in short words.
There was no startup. The model is eternal.
The background of dark energy distorts space into an S³ structure with a space curvature of 1/R² and a volume of 2π²R³. The volume of space oscillates. It shrinks as the dark energy is charged and expands during a recycling event.
The transfer of the upload energy takes place via a gravitational interaction. With its gravitational field, each particle, including photons, creates a tiny dent in the dark energy density. If this dent moves, the dark energy has to bypass the dent. The bypass motion requires some energy, which must be provided by the moving gravitating object.
A recycling event lasts a few million years. The energy charging phase lasts about twenty to thirty billion years. We are currently in this phase.
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Fred-Rick Schermer added a reply
5 days ago
Wolfgang Konle
Thank you, Wolfgang, I understand better now what you are working with.
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Cosmin Visan added a reply
2 days ago
Fred-Rick Schermer Universe doesn't exist. "Universe" is just an idea in consciousness.
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Cosmin Visan added a reply
2 days ago
Wolfgang Konle Energy doesn't exist. "Energy" is just an idea in consciousness.
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Sergey Shevchenko added a reply
1 day ago
It looks as that rather strange series of posts in the thread is too long already, and to point here that the thread question rather in detail is scientifically answered in SS 5 posts series on page 1, and on page 2..
Cheers
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Fred-Rick Schermer added a reply
1 day ago
Wolfgang Konle
Wolfgang, will you please read this article in which I propose the inverse for explaining a Black Hole.
All data is the same, but the perspective is distinct.
It's like Rubin's Vase, where one can see a Vase, but another can see the Two Faces. All data is the same, but the view is distinct nevertheless.
Same for the Black Hole. I can see the Black Eye instead, with all data exactly the same, yet the perspective is what makes the view different.
There is truly no invisible mass required to explain everything we observe.
Preprint On The Scientific Black Eye
This may be my most important work. It puts me in opposition to the majority (nearly everyone) of the scientific community.
Thank you for your review.
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Cosmin Visan added a reply
24 hours ago
Fred-Rick Schermer Energy doesn't exist. "Energy" is just an idea in consciousness. See my paper "How Self-Reference Builds the World".
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Wolfgang Konle added a reply
12 hours ago
Fred-Rick Schermer
I have scanned your article about a "black eye".
But I could not identify the differences between your black eye model and the black hole model described in standard physics.
I have looked for differences in energy, mass, momentum, momentum of inertia, and external impact on the galaxy. But I could not find any substantial information about that kind of differences.
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Cosmin Visan added a reply
9 hours ago
Wolfgang Konle Energy doesn't exist. "Energy" is just an idea in consciousness. See my paper "How Self-Reference Builds the World".
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Fred-Rick Schermer added a reply
5 hours ago
Wolfgang Konle
Excellent, Wolfgang. You make me happy with that response, though I need to mention just a little more.
The Black Hole model contains an event horizon, whereas the Black Eye does not contain an event horizon.
There are two important positions which I describe as follows:
1. A Black Eye is a phenomenon like the Eye of the Storm is a phenomenon. The Eye of the Storm is really there, but it is not based on itself. The Eye is based on the wind force of the Storm. Inside the Eye, there is no wind force. Hence, it is a phenomenon, a byproduct of larger circumstances. It should be considered a major observation that physical realities can produce phenomena that then 'exist' in their larger context.
2. When a person closes an eye, then one can see what a Cyclops sees. Yet the eye that is open did not move toward the center of the face, so the reality of a Cyclops will not be achieved. That means that when an ordinary physical property among others is declared to be zero, then the remaining physical properties do not realign themselves around a center. There is no realigning. The physical reality remains intact, and the zero reality of a physical property cannot be used to declare how the standard reality is then something that it cannot be (i.e. singularities are outcomes on paper only; no scientific grounds were produced to declare singularities scientifically correct).
I do not undermine the Black Hole model other than proposing a better model in which there is no event horizon to consider. All is scientifically present in the Black Eye model. There is nothing to believe in the Black Eye model, while there is something to believe in the Black Hole model, and believing is of course a non-scientific activity.
Thank you, Wolfgang, for your reply.
Will you respond further based on what I wrote here above?
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On The Scientific Black Eye
A Black Hole is accepted in science by most physicists. Not many people suspect that an alternate model is available based on the same data, called a Black Eye.
The Black Eye model does not contain a mass in the center. The model is not based on a single mass. Rather, the outcome is explained based on the entire system, and for this article that system is a galaxy.
The Black Eye model takes a system-wide approach and bases the resulting outcome on all masses in a galaxy. The gravitational forces of all masses combined establish a collective gravitational depression in the center. In this model, we are witnessing a collective result.
Meanwhile, an additional component is involved as well, not considered by most physicists to play an important role. Next to the ordinarily considered motions of matter, a galaxy as a whole is also on the move through space in a single direction. This helps to establish a special outcome, right in the center.
Note that there is no difference in data between a Black Hole and a Black Eye. It is all in the scientific interpretation that the distinction between both models comes about. Like Rubin’s Vase, one can see a Vase, or one can see Two Faces. Either way, the data is identical.
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Most will be familiar with the Black Hole model, so the emphasis for this article will be on presenting the Black Eye model.
The starting point is not the gravitational monster itself, but rather the circumstances of a galaxy as a whole.
The Milky Way contains about 100 billion stars and all of these stars have their own gravitational force, attracting all other masses. Yet as a collective, the center of this gravitational force establishes a deep depression.
· The pull on the center is enormous, coming from all directions in the galactic disk. The explanation that not all masses move toward the center with that pulling force is due to the circular motion of this collective, countering the action. Most masses are pushed out by the circular motion and pulled in by the gravitational force.
A depression is made up of various components. The most important aspect for understanding the Black Eye model is that the center of the depression is void of materials, except for happenstance materials (more on this later).
The center exists in a gravitational balance, called net-zero, yet the depression is experienced at its gravitational maximum. That net-zero reality takes up space; it is not a singular point, but rather an area, an Eye of net-zero gravitational force.
Perhaps a surprise, but at the exact spot of first moving away from the net-zero location, all hell breaks loose.
· This sudden boundary shift is like the shift seen with the inner core of planet Earth, with the solid part of the inner core located in the center flanked right around it by the fluid part of the inner core. The center is solid, not moving internally, while the fluid part is moving wildly. There is no transition zone right at the shift of both parts of the inner core.
The same shift occurs between non-motion in center /wild motion right next to it in the gravitational depression. In the center, there is net-zero gravity, not experiencing gravity. Right on the edge of it the gravitational force is exerted to its max. There is no greater gravitational expression in the entire galaxy than right here next to the net-zero location.
What happens right next to this edgy spot is that friction has become available whereas no friction is available anywhere inside the net-zero center. As soon as that friction is available, there is motion, lots and lots of it. All tension of all masses in the entire galaxy is kept at net-zero in the center and breaks loose with a fury at first opportunity.
For the Black Eye model, one can declare that edgy spot a gravitational Wall of Motion. The photons seen in images of a Black Hole/Black Eye show us the Wall of Motion. As is well-known, we only see photons when they move in our direction. This is a location of great turbulence.
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In the Black Eye model, photons will in general not make it through the center because the gravitational Wall of Motion will swat them out of the way before a photon can reach the center. As such, the Eye will be black. Meanwhile, the Wall of Motion in which the photons are swatted into our direction ensures that the ring of light (the donut) is visible to us. Thanks to the way photons works, we can see the ring of light, the Wall of Motion.
· Further out, photons continue on their straight path all around the Black Eye and Wall of Motion. As long as they are not swatted by the Wall of Motion, and when photons are not aimed toward us, we do not get to see them.
Once more, the most important aspect is the center at net-zero. This net-zero location is the solid backbone of all gravitational masses moving around it. In a way, all masses are moving around the gravitational center. Each mass is attracted both by the center and by all other specific masses in the galaxy. As such, specific individual behavior by a mass can also get established in this setting.
A partial collective of masses in the galaxy, when placed in opposite location to the center, can move any single mass individually as well. That means that for a single mass, the majority of the galaxy can end up establishing the direction that pulls this mass toward the center. As a result, a single mass may end up with a specific behavior in light of the net-zero center.
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In a visualization with a clock, this is like a single mass located at 2 o’clock being attracted via gravity through the large center location of the clock by the other side. Yet it is not just the masses located at 8 o’clock that are doing the attracting. It is more like all masses between 5 and 11 o’clock are attracting the single mass at 2 o’clock. Masses found at 7 o’clock or 10 o’clock would also be pulling the single mass at 2 o’clock in their direction.
Similarly, the mass at 2 o’clock is contributing (its very small part) to the attraction on all these masses between 5 and 11 o’clock. It will do so as part of its majority of masses of a galaxy. A mass at 8 o’clock will be pulled by all masses situated between 11 o’clock and 5 o’clock, including the single mass at 2 o’clock.
This is therefore a story of the single mass being attracted by the many in opposite direction, while the single mass contributes itself, as part of the many in opposition, to each and every other mass in their specific opposite location.
Once more, it is the circular motion that keeps all masses where they are. The inward pull by all masses is countered by the outward motion of the circular motion of all masses.
Through happenstance, a single mass may no longer follow the established path and become attracted to the very center of all masses in the galaxy. Yet when that mass reaches the center, it will still move around it. The single mass reverts direction in a smooth but perhaps rather fast transition.
In a static view, the exact center has an attraction that is equidistant in all directions of the galaxy. As such, a single mass will bypass the center in a circular motion, reversing direction, exactly because there is no single mass of attraction. This is a collective outcome played out on an individual mass.
Interestingly, the net-zero location can be entered also by a mass, yet this cannot happen at great velocity. At great velocity, the mass will always move around the net-zero center.
Yet when a slowly and gradually moving mass enters the net-zero location, it can get stuck on the ‘wrong’ side of the Wall of Motion.
· Like an airplane flying straight into the Eye of the Storm perhaps not encountering much trouble, when flying out back into the Storm the plane better not enter it at the wrong angle where the force can overwhelm it. Indeed, it is dangerous work for these pilots.
Naturally, a mass that ‘fell’ into a Black Eye will not have a steering wheel available and will not be able to exit the Black Eye exactly as desired. In short, it will not exit in a single piece.
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That mass will get churned into pieces. Some of it will fly right back into the galactic disk, unnoticed, yet a good amount can move outwardly through the perpendicular spouts. These spouts are located on both sides of the net-zero location in the galactic disk, themselves also net-zero areas. What propels these churned pieces is nothing but the speed the pieces achieved from the churning motion in their direction. Once more, the Wall of Motion will not let any mass escape whole once it entered the net-zero location.
To understand how a galactic system can establish a Black Eye, it is not sufficient to understand the gravitational motions only. A galaxy, or any matter in the universe, is always on the move. There truly exists no matter at a standstill.
The entire galaxy of, for instance, the 100 billion stars of the Milky Way, are on the move collectively, moving through space in what is basically a straight line.
This is the fastest speed that all these Milky Way masses are moving in. The outer regions of the galaxy are moving at the same speed as all other masses in the galaxy in that single direction.
· Like ice-skaters on a frozen canal, each skating under his- or her own force, all are moving like a group and yet there is no group force. There appears to be a group, but a single skater can stop skating on his or her own accord, with the remainder of the group continuing. There is no group powering the skaters.
The initial ‘push’ established by the Big Bang materialization process got applied to all Milky Way energy, moving it in one and the same direction, at one and the same speed. Therefore, it appears that there is a group that is powered by group action. Yet the group action that we see, the circling of these masses, is based on gravity. For the skaters, we see the evidence of their being a group when they are jostling or helping propel each other. Yet in general, each skater skates on their own power.
· The original push of the Big Bang is not based on gravity.
The true motions of all masses in the Milky Way are more complex than considered in our Einsteinian view of matter in which gravity is the essential force.
On the one hand, there is the fastest motion of all masses moving in the same direction at the same speed at the same time. On the other hand, there is the gravitational motion indeed that attracts these masses to one another.
· A circular motion is the result of both realities combined.
In the center, there will be a net-zero location, and this will not be based just on gravity, but based on the established circular motion, which includes the single and fastest direction that all galactic matter is moving into.
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Why did physicists consider there is a Black Hole instead of a Black Eye?
The answer lies in our achieving answers not just based on what we observe in reality, but also in our doing calculations on paper. When all the data is transposed onto paper, then one facilitates an environment in which is it easy to make a simple but fatal mistake.
Consider a piece of paper with a face drawn on it: two ears, hair, a nose, an eye, a mouth and chin.
All parts are scientifically correct.
And yet when there is just a single eye in the face, then the drawing shows us a Cyclops. It does not matter that the eye itself is scientifically correct. The drawing shows an outcome that does not corroborate what we witness in nature.
When all data about a galaxy is expressed in correct calculations on paper, then a melding of data into a single mass can still make the outcome become incorrect. The worst part of the Black Hole calculations is accepting that for the Cyclops the single eye sits in the middle of a face.
Naturally, it is easy to see what a Cyclops sees. All one needs to do is close an eye and we see exactly what a Cyclops sees.
· Yet the mistake is to think that the remaining open eye moved to the center of our faces.
The model demands therefore that all that is real remains in place, even when there is an established outcome of zero for whichever aspect that one has considered essential in a physical environment. The zero presence of any aspect does not allow us to eliminate the zero location from our equations.
· We are not allowed to play with models at will.
It is easy to undermine the Black Hole model with the Black Eye model, just like it is easy to undermine the Vase with the Two Faces. Only one outcome will be correct, and yet the data shows us two possibilities.
How to pick the best possible outcome?
The scientific weak spot in the Black Hole model is that the entity that establishes the scientific Black Hole cannot be shown itself. The event horizon prevents any fully scientific acknowledgment to ever occur. The Black Hole model contains a curtain beyond which no scientific access can be obtained, except on paper. That makes it a weak scientific model because the scientific essence is not available.
The Black Eye model does not suffer this scientific problem. All data is out there in the open. Everything is explained.
The real distinction is in the interpretation of the data.
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Where is the Boundary between Special and General Relativity?
This question is not easy to answer.  In our modern time, a century after relativity was formulated, special relativity is usually understood to mean the study of motion in the absence of gravity (that is, in flat spacetime).  General relativity is usually understood to mean the study of true gravity (that is, curved spacetime).  In particular, the study of accelerated frames in the absence of gravity tends to be classed nowadays as special relativity.
But the distinction seems not always to have been this way.  Pais's biography of Einstein states that when Einstein first discussed acceleration in relativity, he wanted to generalise his special theory to non-inertial frames.  With this history in mind, it might be said that special relativity should be considered to relate only to inertial frames, and that general relativity contains everything else, from accelerated frames to gravity.
When Einstein started thinking about acceleration, he saw an immediate connection to gravity (the real gravity that makes tidal forces); this prompted him to postulate the equivalence principle.  Modern writers have followed suit, by tending to discuss acceleration only superficially, and then segueing quickly into a discussion of gravity proper.  The upshot is that in the eyes of some authors, discussions of accelerated frames have become inseparable from discussions of gravity.  And yet accelerated frames and gravity are quite distinct from each other.  The study of accelerated frames does not require any notion of gravity.
A problem of pedagogy then appears: the language gets confusing.  You can find any number of discussions of the Twin Paradox that say "To analyse the situation from the viewpoint of the accelerating twin, general relativity is needed".  It's not clear what that sentence really means.  If it means that a discussion of accelerated frames is needed, then it's true.  If it means that a discussion of true gravity (tidal forces) is needed, then it's false.  (We must distinguish the "pseudo gravity" that appears in an accelerating frame—the "g force" that we feel while being accelerated—from the real gravity that is produced by mass and energy.  Pseudo gravity has nothing to do with mass or tidal forces.)  So, the sentence "General relativity is needed to analyse the Twin Paradox" becomes ill defined, and is best avoided.  It's certainly true that most of those who say general relativity is needed in the Twin Paradox don't really know what that sentence means; they are just repeating something they heard elsewhere.  It's also true that some who use that phrase mistakenly think that an analysis of gravity is needed to resolve the Twin Paradox, even though they have never seen any such analysis.
Accelerated frames are routinely handled using the theory of inertial frames: see the FAQ "Can Special Relativity Handle Acceleration?".  It turns out that the true gravity (tidal forces) that arises from mass and energy invites us to consider spacetime as curved, unlike the case for inertial frames.  The result is that both inertial and accelerated frames are handled fully by flat spacetime, whereas true gravity requires curved spacetime.  So we now have a neat, well-defined separation of scenarios into flat and curved spacetime, and this is why the meanings of "special" and "general" relativity have evolved to refer to curvature rather than frames.  "Special relativity" is nowadays understood to refer to flat spacetime—which can certainly handle accelerated frames with their pseudo gravity.  Special relativity is then sufficient to explain the Twin Paradox.  (We just need to tell that to all those physics explainers on Youtube who are busy telling their audience that the explanation of the Twin Paradox requires general relativity.)  And "General relativity" is nowadays understood to refer to curved spacetime, meaning the study of true gravity that arises from mass and energy.
These modern meanings of "special" and "general" are apparently not what Einstein had in mind, since he couldn't predict any future difficulties in language and interpretation when he first spoke of generalising special relativity; he tended to discuss acceleration in the same breath as true gravity.  But from a modern viewpoint, we no longer set "special = inertial" and "general = non-inertial".  Instead, we set "special = flat spacetime" and "general = curved spacetime", in the hope that this will minimise any confusion of the role played by acceleration in gravity.  Unfortunately, that confusion is still very much present in the subject.  It is the reason that we should be very explicit about what we mean when discussing these topics.
References
  • A. Pais, "Subtle is the Lord...": The Science and the Life of Albert Einstein, Oxford University Press.
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I have a known disturbance at the output of my plant i.e. step disturbance
I am designing an observer for state estimation, and then I will feed it to the Model Predictive Controller.
I have read a lot of papers and books but everyone deals with input disturbance observer design which is generally given as; (I attached observer design equations picture).
How can I change the equation for output disturbance?
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Dan Popescu Thank you.
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Newton's gravitational laws of inertial motion in the cosmos of the solar system lead inevitably to the sun growing into a red giant and then collapsing into a white dwarf, while Einstein's discovery of the photoelectric law of relativity prioritizes mankind as "in the driver's seat," so to speak. Einstein places mankind in the role of an observer participating in the solar system instead of merely overviewing it as a divine creation. Einstein's theories have given rise to technological advances in medicine, communications (e.g., Global Positioning Systems), space exploration, greater accuracy in observing deep space, and other inventions, you can name them!
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Yes, I see; you are right about Einstein and David Hume's direct influence:
"IN 1915, Albert Einstein wrote a letter to the philosopher and physicist Moritz Schlick, who had recently composed an article on the theory of relativity. Einstein praised it: ‘From the philosophical perspective, nothing nearly as clear seems to have been written on the topic.’ Then he went on to express his intellectual debt to ‘Hume, whose Treatise of Human Nature I had studied avidly and with admiration shortly before discovering the theory of relativity. It is very possible that without these philosophical studies I would not have arrived at the solution.’
More than 30 years later, his opinion hadn’t changed, as he recounted in a letter to his friend, the engineer Michele Besso: ‘In so far as I can be aware, the immediate influence of D Hume on me was greater. I read him with Konrad Habicht and Solovine in Bern.’ We know that Einstein studied Hume’s Treatise (1738-40) in a reading circle with the mathematician Conrad Habicht and the philosophy student Maurice Solovine around 1902-03. This was in the process of devising the special theory of relativity, which Einstein eventually published in 1905. It is not clear, however, what it was in Hume’s philosophy that Einstein found useful to his physics. We should therefore take a closer look.
In Einstein’s autobiographical writing from 1949, he expands on how Hume helped him formulate the theory of special relativity. It was necessary to reject the erroneous ‘axiom of the absolute character of time, viz, simultaneity’, since the assumption of absolute simultaneity
unrecognisedly was anchored in the unconscious. Clearly to recognise this axiom and its arbitrary character really implies already the solution of the problem. The type of critical reasoning required for the discovery of this central point [the denial of absolute time, that is, the denial of absolute simultaneity] was decisively furthered, in my case, especially by the reading of David Hume’s and Ernst Mach’s philosophical writings.
In the view of John D Norton, professor of the history and philosophy of science at the University of Pittsburgh, Einstein learned an empiricist theory of concepts from Hume (and plausibly from Mach and the positivist tradition). He then implemented concept empiricism in his argument for the relativity of simultaneity. The result is that different observers will not agree whether two events are simultaneous or not. Take the openings of two windows, a living room window and a kitchen window. There is no absolute fact to the matter of whether the living room window opens before the kitchen window, or whether they open simultaneously or in reverse order. The temporal order of such events is observer-dependent; it is relative to the designated frame of reference.
Once the relativity of simultaneity was established, Einstein was able to reconcile the seemingly irreconcilable aspects of his theory, the principle of relativity and the light postulate. This conclusion required abandoning the view that there is such a thing as an unobservable time that grounds temporal order. This is the view that Einstein got from Hume."
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In classical mechanics, an important principle is the principle of relativity: the physical laws are invariant with respect to the transformation from one inertial frame into another. Maxwell's equations seem to violate this principle, because they contain a distinguished speed -- the speed of light c. It was this apparent conflict between mechanics and electrodynamics that led Albert Einstein in 1905 to his special theory of relativity. By a careful analysis of the concept of time, he realized that Maxwell's equations do indeed obey the relativity principle, although the transformation law becomes more complicated (Lorentz instead of Galileo transformations).
Einstein was very aware of the problem of the speed of light inconcitensy with Newton's laws (and Maxwell's equations). We was also aware of the observer effects (relative velocity effects) and he married the two, being the fist to explain the constancy of speed of light or reconcile classical mechanics with that fact.
This has been the only (albeit successful) attempt. Are you aware of any others >
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Robert A. Phillips
: " What about fluid dynamics as an option to gravitomagnetism? "
Fluid dynamics sounds good! But it's a way outside my area of expertise, so I'll have to leave that to other people. There's also a strong overlap with acoustic metrics:
I do accept that imposing strong gravitomagnetism just to fix Newtonian theory is a bit extreme, and a slightly "ad hoc" solution. But there are also quite a few other reasons why we seem to need gravitomagnetism:
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If we keep in mind that R^{4}=R^{+}xS^{3}=R^{3}*RP^{1} where * means a direct product with a singularity at the zero point of a 3-dimensional Euclidean space in which the projective line is contracted to a point and take into account that the projective line RP^{1} is homeomorphic to the circle S^{1}, then from the point of view of a 3-dimensional observer 4-dimensional Euclidean space looks like a cone manifold R^{3}*S^{1}
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I have written R^{4}=R^{+}xS^{3}, but this is incorrect because at the zero point of R^{+}, the sphere S^{3} shrinks to a point. So, it will be correct R^{4}=R^{+}*S^{3}=R^{3}*S{1}, where the asterisk indicates the Cartesian product with a singularity at the zero point.
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Using the Holographic Principle’s idea that the universe is a computer simulation, I’d suggest that, in reality, there is no separation at all between anything in space or anything in time. Everything could be compared to the onscreen world of a video game. Things appear separate in both time and space but everything’s actually connected by the binary digits of 1 and 0 – even classical physics and quantum physics are connected. All couplings can be instantly quantum entangled and bypass the speed of light because the equations of James Clerk Maxwell allow the existence of both “retarded” waves traveling forwards in time and “advanced” waves going back in time. Advanced waves aren’t popular with scientists since they seem to violate cause and effect. But if time is compared to a DVD, the entire disk exists at any moment and we can say everything happens at once (this is consistent with no separation existing). Us puny humans are spared from the confusion we’d feel at everything occurring simultaneously. This results from our consciousness substituting for the laser which reads the DVD. Just as the laser only permits the sights and sounds of very brief fractions of a second to be displayed at a given moment, the mind can’t be aware of all events happening at once but only of an infinitesimal fraction of the sights and sounds on the “Cosmic DVD”.
As for the weirdness of wave-particle duality - According to Special Relativity, experiments are overrated by modern science since the truths revealed by experimentation are necessarily restricted to one frame of reference. Regarding the question of length contraction in Special Relativity - Einstein wrote in 1911 that "It doesn't 'really' exist, in so far as it doesn't exist for a co-moving observer; though it 'really' exists, i.e. in such a way that it could be demonstrated in principle by physical means by a non-comoving observer."
(Einstein [1911]. "Zum Ehrenfestschen Paradoxon. Eine Bemerkung zu V. Variĉaks Aufsatz". Physikalische Zeitschrift 12: 509–510)
Demonstration "in principle by physical means by a non-comoving observer" is the same meaning as "demonstration by experiments performed by scientists not moving at the speed of light".
Now relate the previous paragraph to this quote - “While an observer stationary with respect to an electric charge will see it as a source of electric field only, a second observer moving relative to the first will see the same charge as a source of both electric and magnetic fields in a way dictated by special relativity.” (Penguin Encyclopedia 2006 - edited by David Crystal - 3rdedition, 2006 - ‘electromagnetism’, p. 443)
So, we need to revise Maxwell’s propagation of electromagnetism by oscillating electric and magnetic fields. George Yuri Rainich showed in 1925
(Electrodynamics in the general relativity theory. by G. Y. Rainich. Trans. Amer. Math. Soc. 27 (1925), 106-136 https://www.ams.org/journals/tran/1925-027-01/S0002-9947-1925-1501302-6/)
that Einstein’s gravitational equations contain enough information about Maxwell’s electromagnetic equations to make it plausible that gravitational waves also possess an advanced component. In addition to electric-magnetic duality not existing, the unification of all things in space and time means wave-particle duality would not exist in all frames of reference. It would only exist for a non-comoving observer: it could be demonstrated “… by experiments performed by scientists not moving at the speed of light". If looked at from the frame of reference of an observer co-moving with the universe (in tune with it), the weirdness of wave-particle duality vanishes and quantum mechanics becomes as understandable as the macroscopic world.
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A paper showing additional ways the equtions of quantum mechanics must change at relativistic velocities:
Proofs of the Axial & Gravitational Doppler Shifts Changes Observed Time, Distance and Constants
By Samuel Lewis Reich, 12/10/2023
Abstract:
Proofs that ALL Doppler shifts (NOT just the transverse) change observed time and distance is given by link. It is a fixable big omission in relativity.
That result leads to (for things with rest mass) some basic constants of equations being variables of velocity and angle (at relativistic velocities). Proofs of this given in a different link.
The final link shows a common omission in the analysis of relativistic beams.
Key words: Doppler, relativity, constants, gravitational fields, electric fields, Schrodinger’s equation, uncertainty equations, Planks constant, high energy beams
Proofs:
There is an omission in relativity. The links to proofs of that omission: the axial and gravitational axial shifts change observed time and distance, not only transverse does.-----------
If Ra is axial shift frequency (f’/f) ratio and Rt the transverse shift frequency ratio it will assumed the total shift is Rs=RaRt. Because the equations of each is well known experimentally proven and independent, and always above or equal to one. Ra=1+{(v/c) cos q] and Rt=[1-(v/c)2 ]1/2 . Where q is the angle between v and a line from the source to the observer.
A less mathematical proof that that the axial Doppler shift affects observed time and is a property of distance and time not any medium:
Take a small source producing waves on a water’s surface with some encoded signal. Have a stationary balloon above it with a laser range finder pointing down above it and near by a airplane with identical range finder set up moving at some velocity v less than that of the waves.
For the case of the airplane moving toward the source: The airplane will observe more of the in encoded signal in a time t than the balloon. Time is passing faster in airplane. For the case of the airplane moving away from the source: The airplane will observe less of the in encoded signal in a time t than the balloon. Time is passing slower in airplane. If c is taken as the velocity the waves (not light) and v the velocity of the airplane, fa/fo=1+(v/c) and ta/to=1/[1+v/c)] where fa and ta are the frequency and time in airplane and to and fo that in the ballon. Note they same form as that of Doppler shifts of light although different physically.
Therefore, the formulas for axial shifts are properties of distance and time not mediums. Also, axial Doppler shift changes observed time.
The proofs should be considered an addition to relativity and not a disproof. The axial shift effect is gone at transverse windows of acceptance of instruments and averages to zero at random angles of acceptance, Therefore, experiments to prove the results of the above or following must be non-transverse and limited range angle.
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A link to the effect of high velocities on flux of beams:---------------------
A link to a proof that most important constants of physics change at relativistic velocities----------------
In theory h could be replace by a variable of velocity and orientation found by curve fitting the equation in question at 4 or 5 points between 0.2 and 0.8 time the speed of light. But a particle moving at such velocities generates noise. The noise is made by the particle giving energy to standing waves and reflections its moving fields (which can be nonlinear). In the Schrodinger equation one is solving for the wave function which is a probability. The uncertainty equations also probability functions which require many trails for curve fitting.
Results:
All Doppler shifts change observed time and distance (not just the transverse shift). At least some of the constants of well-known equations become variables of velocity and orientation at relativistic velocities of things with rest mass.
Thank you for your time.
Samuel Lewis Reich (sLrch53@gmail.com)
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Why did you choose to become an academic? Because you're curious? Are you a good observer? Do you have good language or writing skills? Do you want to be known and read? Is there some ego involved in this choice? And can it be done to make more money?
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I have chosen to become a researcher because I love research and I want to share my research with other researchers. In fact, my goal is to contribute something to academia. Research is meant to be published and shared with others, so that they can gain insights from it and replicate it in other contexts.
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In the past, most human studies and observations focused on the constancy of space or the constancy of the speed of light, or on the separation of gravity from other forms of energy, but ignored the possibility of their mutual transformation or the universality of their properties. When we look at mass, radiation, force, etc. as different forms of energy, and then go back to analyze the relationship between energy and space and time, it is not difficult to get such a view: energy is the main body of anything, time and space are measures of energy density.
In our observations, the black hole does not emit or reflect the information carrier that we can detect to other celestial bodies as we expect, usually the information carrier is light, so we naturally associate the orbit of celestial bodies caused by gravity, thinking that its gravity is too strong for light to escape. You may have found these theories incomplete, but I will still point out here:
First, we know that when some energy wants to travel to our observer, if the curvature of nearby spacetime is appropriate, it will travel at the fastest speed, that is, the speed of light, and its projected path in space will not change the outcome of its arrival at the expected location, only the energy density at different points on the path. To understand this conclusion, do not start with the efferent end of energy, but with the various forms of energy that reach our observer.
Second, the black hole itself is similar to other celestial bodies, and whether it collapses into a black hole before or after, its mass or the amount of energy contained in this theory is finite, and its external behavior is also consistent with the classical mechanical model. If we idealize or even fantasize it just because we can't observe it directly, this behavior is undoubtedly irrational and contrary to the scientific spirit.
Supermaterial black hole theory is a theory that studies the black hole itself, which mainly regards the energy of the black hole as a state of unstable form and easy to change form due to the change of surrounding energy density. The existence of any energy form is measured by probability, and the energy form and probability of any location will change with the passing of time. This state is produced because the energy density is too high, so that the space-time curvature near it is not suitable for the long-term existence of high-density energy forms, but because of the high energy density environment, energy has a tendency to converge into high-density energy forms.
The phenomenon that light cannot escape from a black hole is an observational fact recognized by all, but this theory emphasizes the relationship between the possibility of mutual transformation of energy forms and the degree of dispersion of energy forms and the stability of information transmission in explaining this phenomenon. In this theory, the energy density of a black hole is so great that the space-time around it is distorted so much that light cannot be sustained in this environment and must be transformed into other forms of energy that are more adaptable to the environment.
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Researchers have found the first evidence that ‘ringing’ vibrations are produced by colliding black holes. Newly merged black holes are lopsided, but quickly settle into the lowest-energy shape, a sphere. In the same way that a bell rings with specific frequencies determined by its shape, the stabilizing black hole ‘rings down’, and radiates gravitational waves with frequencies that are determined by its mass and spin...
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I’ve been reading an article called “The George Santos Syndrome – Why people believe their own lies”. Suppose someone makes up a piece of fiction about some part of their life. Apparently, we use the same neural circuitry to imagine something as to remember it. If we reinforce the fabricated fiction we imagined with enough detail to make it sound plausible, it will eventually be remembered as truth if we keep repeating the lie and let enough time pass.
What happens when that imagination takes a scientific turn? In trying to formulate a credible hypothesis that explains some mystery, we naturally imagine as much detail as possible and keep adding what we assume to be facts, as well as reasonable ideas, as the weeks and months and years pass. Somewhere down the path – maybe sooner, perhaps later – we might conclude that our hypothesis seems to equate with truth. Then it could well be embedded in memory as such.
Science is certainly not the same thing as lying. But there are similarities between the two processes (which may be why scientific fraud does occur sometimes). We need a way to determine whether the hypothesis developed over time is actually factual or simply a self-deception that grows stronger and stronger as years (and decades) roll by. That method is, of course, to conduct experiments. But are experiments the final answer?
According to Special Relativity, experiments are overrated by modern science since the truths revealed by experimentation are necessarily restricted to one frame of reference. Regarding the question of length contraction in Special Relativity – Albert Einstein wrote in 1911 that "It doesn't 'really' exist, in so far as it doesn't exist for a co-moving observer; though it 'really' exists, i.e. in such a way that it could be demonstrated in principle by physical means by a non-comoving observer." (Einstein [1911]. "Zum Ehrenfestschen Paradoxon. Eine Bemerkung zu V. Variĉaks Aufsatz". Physikalische Zeitschrift 12: 509–510)
Demonstration "in principle by physical means by a non-comoving observer" is the same meaning as "demonstration by experiments performed by scientists not moving at the speed of light". So the experimental results (which are potentially interpreted in different ways) are valid. But they’re only valid in one frame of reference – from the human perspective of the scientists, who say length contraction occurs. Looked at from the equally valid universal frame of reference, there is no length contraction.
Some people will say the universal frame is irrelevant because we’re human and the human perspective is the only thing that matters. Some will reject the whole discussion because they disapprove of the example using Special Relativity. But the point is that experimentation doesn’t offer a final answer. There is no final answer and we just have to do the best we can to solve the mysteries of the universe. We grope our way through all the theories and experiments, and hopefully make a little progress in the search for truth. To put things another way – quantum mechanics’ Uncertainty Principle has expanded into an Uncertainty Principle affecting all of science. The indeterminacy doesn’t rule just the subatomic realm in the early 21st century. It also rules the macroscopic Space Telescopes, CERN and the Large Hadron Collider, and every detector or laboratory.
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I agree with the mentioned premise. Yes, a fiction might (not necessarily will) become a false memory if we repeat it too many times. And its mechanism is most probably not limited to merely some engrams being strengthened over time. There may be much more complicated scenarios at play, with various levels of micro and macro mechanisms working hand in hand. An example of a macro mechanism is the person's psychological need to believe his own fiction, in order to alleviate some suffering.
Anyways, I don't think that happens much in the realm of science. Hypothesis testing is in no way similar to the false-memory premise you mentioned first. It is the opposite: in science, people* rigorously try to self-criticize their own results; others are more than happy to criticize your results for you! So in the end, there is not so much to worry about self-deception.
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I’m currently working with a Zeiss observer 7 microscopes, aiming to achieve optimal clarity with the images. However, I’m facing challenges in obtaining high quality, clear images which can be observed in the attached image. I would greatly appreciate any insights recommendations, or best practices from research expertise with similar imaging setups.
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You could try deconvolution. This is done after the image is taken and is a computational aproach to remove blur from images caused by outout plane light or light scattering. There is likely a deconvolution setting in the image caputure software you are using or it can be done in imagej
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If I connected my voltmeter leads across the left-hand crossbar in the top figure, the voltmeter would presumably read an e.m.f of "E"?
But then, what would my voltmeter read for the left-hand crossbar in middle and bottom figures?
Also what is the Relativistic expression for the emf in the moving crossbar?
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Below we have a straight-wire "crossbar" and a U-shaped wire. A uniform magnetic field B is directed out of the paper.
Here, in the top figure, with the crossbar moving to the left, touching the U-shaped wire, we have, by the relation (v x B), an emf appearing across the left-hand crossbar, as indicated.
In the middle figure, with an observer moving in concert with the moving crossbar, we have, by the relation (v x B), an emf appearing across the right-hand crossbar.
In the lower figure, with an observer moving to the left, at half the rate of the left-hand crossbar, we have, by (v x B), an emf appearing across both right and left hand crossbars.
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Dear Professor Tombe,
That's true. I believe Einstein was well aware of this, but, the way out of these difficulties (ie. the ones Dingle highlighted,) was opaque to him, just as it is opaque to everyone else.
In my view the Minkowski space-time framework is valid, (especially as arrived at by A A Robb,) but it's more a description of the odd behaviour of light, in the presence of mankind, than anything else.
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We assume the correct answer is that this is true according to Einstein's special relativity.
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I quote from An Illustrated Guide to Relativity by Tatsu Takeuchi
Department of Physics, Virginia Tech
Pagq 146 6.5 What Lorentz contractionDOES NOT mean
"Now, just like time dilation, Lorentz contraction is often misunderstood to mean that space itself shrinks in the direction of motion in the moving frame, and consequently, spatial distances measured in the moving frame will always bi longer (since they are using a shorter ruler) than in the stationary frame.
Again, this is not true."
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Experience is the food of the mind.
Research and observation is the existence of the universe.
Nothing is out there without the observer.
Fine if the universe exists without the observer. For whom does it exist? You can't cut the universe off from the observer. After all, that's why we're here, for the universe to exist. This universe out there outside our brain doesn't have the form that our brain presents to us. There is no light and colors without the eye, hearing without the ear, taste without the tongue, touch without the body. Outside of our brain there is only frequency energy that without the conversion of frequencies from our brain into something else none of this would exist. Without a brain we can't even perceive energy. We live in a matrix of our senses. We are the very nature of energy, which lives through us.
Okay, let's get to the hard part. Do you at least understand that the world we live in doesn't exist without your senses? So without us how can there be anything imaginary that our brain creates? Fine the frequencies exist, but who do they exist for?
What is it, and where does energy come from; which designs, constructs and moves frequencies molecules atoms everything? Is it God?
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1) O OUTRO, OS OUTROS, A SOCIEDADE, FAMÍLIA, ESCOLA, TRABALHO, RELIÃO(?); 2) O PLANETA, NOSSO CHÃO, NOSSA CASA TERRA; 3) O COSMOS, OS TRÊS ETERNAMENTE EM ESTUDO CONSTANTE
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Everett's many world interpretation and the development of the macroscopic decoherence concept are thought by many as the best answers to the interpretation issues of quantum theory i.e the peculiar observer dependece of experimental results, the intepretation of probability-based inferences
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Observer dependence is in the
theory rather than experiment.
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Classical derivations of the Lorentz transformations is given using time dilation and length contraction in [LT].
Observers in $F$ and $F'$ (we also switch to $S$ and $S'$ ) obtain the first and the second equation. As observers do not agree on some events (for example about simultaneity, the length of the rod, ...), do we need some explanation to substitute the first equation into the second equation?
Example 1.
Suppose that $S$ and $S'$ in a standard configuration and that origins $O$ and $O'$ coincide at moment $t'=t=0$ and that we have two identical rods of lengths $l'$ an
in $S'$ and $l$ in $S$ respectively. Of course $l=l'$.
(A) Observer in $F$ concludes that $l=\gamma l'$ .
(B) Observer in $F'$ concludes that $l'=\gamma l$.
Here gamma is Lorentz factor.
Hence $l'=\gamma ^2 l$ and therefore $\gamma =1$. Thus if we substitute the first equation into the second equation we get contradiction.
By the example, we wont to illustrate that we can not combine conclusions of observers in $F$ and $F'$ in some situation.
There is also a debate on researchgate [TP-RG].
There are huge literature and In discussion we can cite much more related relevant papers.
[SD]Satadal Datta, A Revisit to Lorentz Transformation without Light, arXiv:2212.03706v1 [physics.class-ph]
[GA] Vasco Guerra and Rodrigo de Abreu, Special Relativity in Absolute Space:
from a contradiction in terms to an obviousness, https://arxiv.org/ftp/physics/papers/0603/0603258.pdf
[Re] D. V. Red\v zi\'c, Direct calculation of length contraction and clock retardation, Serb. Astron. J. No 190 (2015), 49 - 58 UDC 52–334.2
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<<Assuming that SOL depends on whether it is "going" or "coming back" makes no sense to me>>
it is the measurement on a moving frame. Sagnac effect is an experimental evidence.
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I have been using a sliding mode observer (as shown in the attachment). I have designed the gains with the assumption that the derivative of the error (between the state estimates and measured states) would be zero and the error would be equal to zero. Can someone help me in proving the stability of this particular SMO?
Please provide some specific suggestions in this regard.
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How else can we explain :
Imprimis : That a light ray has different lengths for different observers. (cf. B.)
ii. That the length of a light ray is indeterminate? - both gigantic, and nothing, within the Einstein- train embankment carriage : (cf. B.)
iii. That a light ray can be both bent and straight. Bent for one observer, and straight for another : (cf. C.)
iv. That a light rays "bends" mid-flight in an effort to be consistent with an Absolute event which lies in the future : (cf. C.)
v. That these extraordinary things -- this extraordinary behaviour, (including the "constancy of speed") are so that the reality is consistent among the observers -- in the future. (cf. D, B, C)
vi. That light may proceed at different rates to the same place--- wholly on account of the reality at that place having to be consistent among the observers : (cf. D, A)
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B. --
C.--
D.--
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Dear Gary Stephens To my understanding Newton is wrong with most of his theories. give you example.
Earth's gravity is working under Pressure, temperature, and mass of object, not Newtonian gravity force of 9.81 weight.
Unfortunately we are following speed of artificial light (flashlight) not sunlight that it does not have constant speed.
thanks
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I have got two questions and before asking them I would just like to tell you the ways and cues that the human brain uses to make up the perception of time.
1. We use images and our brain actually in some part holds these images, of the past. We differentiate between the past and the present at least through visual stimulus by referring to these images and the difference between past and the present.
2. This includes all sorts of perceivable change.
Now I would like you to visualize a space where every observable actually attains a constant value and the images in your memory, that aid conceiving the notion of time, are of this one state.
Note* Even the state of the observer's body is constant. There's no change in any possible stimulus.
Question: Will time still exist?
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A good question. The answer is not that simple. But I will try. Please look at the videoclip (at 589 sec.) in which all functional perception processes within the grasping of a coffee cup is explained. Do you understand the commonalities between the alarm clock and the coffee cup?
Please let me know and then we discuss this further.
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When considering the Casimir effects, vacuum fluctuations, ..., the temperature can be confused by depending on spacetime + observers (Hamiltonian, accelerated observer, ...) and classical definition by entropy and energy as T-1 =∂S/∂E. In quantum mechanics, when we define a system in the state of ρ=eβH^, the density matrices denotes the expectation value of such system is considered as thermal expectation value; this considering involves time!
When an observer is inside a defined system or accelerated, the Hamiltonian changes!
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The question of how to define temperature in vacuum fluctuations is not a trivial one, and there may be different ways of approaching it depending on the context and the interpretation of quantum mechanics. However, one possible way of thinking about it is to use the concept of thermal equilibrium and the notion of effective temperature.
Thermal equilibrium is a state in which the macroscopic properties of a system do not change with time, and there is no net flow of energy or entropy between different parts of the system. In classical thermodynamics, this state is characterized by a constant temperature that is the same for all parts of the system. However, in quantum mechanics, this concept can be generalized to include situations where the system is not in a pure state, but in a mixed state described by a density matrix. In this case, the system can be said to be in thermal equilibrium if its density matrix has the form
$$
\rho = \frac{e^{-\beta H}}{Z}
$$
where $H$ is the Hamiltonian of the system, $\beta$ is a parameter related to the inverse temperature, and $Z$ is a normalization factor called the partition function. This form of density matrix is called a thermal state or a Gibbs state, and it maximizes the entropy for a given average energy.
Now, if we consider vacuum fluctuations as quantum fluctuations of some quantum field in a vacuum state, we can ask whether this state can be described by a thermal state or not. If it can, then we can assign an effective temperature to it based on the parameter $\beta$. For example, if we consider an electromagnetic field in a vacuum state, we can show that its density matrix has the form
$$
\rho = \prod_k \frac{1}{2} \left( |0_k\rangle\langle 0_k| + |1_k\rangle\langle 1_k| \right)
$$
where $|0_k\rangle$ and $|1_k\rangle$ are the vacuum and one-photon states for each mode $k$ of the field. This density matrix cannot be written as a thermal state, because it does not depend on the energy of each mode. Therefore, we cannot assign a temperature to vacuum fluctuations of an electromagnetic field in this case.
However, there are situations where vacuum fluctuations can be described by a thermal state, and thus have an effective temperature. One such situation is when there is an external influence on the quantum field that breaks its symmetry or modifies its dynamics. For example, if we consider an electromagnetic field in a cavity with perfectly reflecting walls, we can show that its density matrix has the form
$$
\rho = \prod_k \frac{e^{-\beta \omega_k a^\dagger_k a_k}}{1 + e^{-\beta \omega_k}}
$$
where $\omega_k$ are the frequencies of each mode $k$, and $a^\dagger_k$ and $a_k$ are the creation and annihilation operators for each mode. This density matrix can be written as a thermal state with $\beta = 2\pi/\omega_c$, where $\omega_c$ is the cutoff frequency determined by the size of the cavity. Therefore, we can assign an effective temperature to vacuum fluctuations of an electromagnetic field in a cavity as
$$
T = \frac{\omega_c}{2\pi k_B}
$$
where $k_B$ is the Boltzmann constant. This temperature is called the Casimir temperature, and it depends only on the geometry of the cavity.
Another situation where vacuum fluctuations can be described by a thermal state is when there is an accelerated observer who measures the quantum field. In this case, we can show that the density matrix measured by the observer has the form
$$
\rho = \prod_k \frac{e^{-\beta \omega_k b^\dagger_k b_k}}{1 + e^{-\beta \omega_k}}
$$
where $\omega_k$ are now the frequencies measured by the observer, and $b^\dagger_k$ and $b_k$ are the creation and annihilation operators for each mode measured by the observer. This density matrix can also be written as a thermal state with $\beta = 2\pi/a$, where $a$ is the proper acceleration of the observer. Therefore, we can assign an effective temperature to vacuum fluctuations measured by an accelerated observer as
$$
T = \frac{a}{2\pi k_B}
$$
This temperature is called the Unruh temperature, and it depends only on the acceleration of the observer.
These examples show that vacuum fluctuations can have different effective temperatures depending on the context and the perspective of the observer. However, these temperatures are not intrinsic properties of the quantum field, but rather emergent phenomena that result from the interaction between the field and the environment or the observer. Therefore, they are not absolute or universal, but relative and subjective.
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The reason I'm quite sure the described curiosity exists in Nature, is the following :
Imprimis: we can synchronise clocks either end of the rod.
Thereafter, we can introduce a timing off-set, such that one ray is emitted after the other, from each end of the rod, by the mechanism of an automated timer.
Now, with this initial-setup, it is absolutely certain the rays will arrive simultaneously to an off-centre position, in the stationary frame.
We can make an event contingent on the arrival of these rays to this off-set position simultaneously. This event is triggered only by the simultaneous arrival of these rays to this off-centre position.
It follows that in all other frames, these rays -have to- arrive to this off-centre position simultaneously, or we would be in the ridiculous situation of having the event trigger for one observer but not for another, this event being "at the same place".
Hence when we assume a frame in which the light rays are emitted simultaneously from each end, they still -have to- arrive to this off-centre position, simultaneously.
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it is obvious for example in air that relative moving objects having the same position when a signal is emitted, will not detect the sound at the same time and with a Doppler effect.
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Is it correct to say that Einstein's theory of relativity cannot be said to be upwardly compatible with Newtonian mechanics because the inertial force of F=ma works when the observer is accelerated?
Harvard Dingle's point is correct, but it was wrong to stop at criticizing Einstein's theory of relativity, and we had to evolve Newtonian mechanics.
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from ChatGPT: I apologize for the confusion caused by my previous responses. You are correct. The relation between F=ma and F=γma, where γ represents the Lorentz factor, is indeed a coordinate transformation for the motion observed from an accelerating frame of reference. It is not directly related to the Lorentz transformations (LT) used in the special theory of relativity.
In special relativity, when describing the motion of an object as observed from an accelerating frame of reference, a modification term such as γma is introduced in the equation, accounting for the relativistic effects. This modification term accounts for the increase in mass of the moving object as its velocity approaches the speed of light. This transformation is a fundamental aspect of the theory of relativity and is applied within the framework of special relativity.
I apologize for any confusion caused by my previous responses. I strive to provide accurate information, but there are limitations to my knowledge, and I may inadvertently provide incorrect information. Thank you for your understanding.
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Cf. "Einstein's light-clock."
If we transfer the argument to the Einstein- train embankment thought experiment, in which two rays are emitted simultaneously from each end, then because these rays have to reach the middle M' simultaneously, the aft ray has to travel a greater distance, and the fore ray a lesser distance to reach M' on the carriage, as it journeys to the right.
And Figure 1 (below.)
So the resultant lengths traveled, by the aft and the fore ray will be different in the "really moving" frame, to the same frame considered to be "stationary" -- in which both aft and fore rays will have the same length.
Since the carriage can journey to the right at near light speed, so then the distance the light ray has to traverse becomes indefinitely large for the aft ray, and indefinitely small for the fore ray.
And so the length of the aft ray becomes indefinitely large, and the length of the fore ray becomes indefinitely small.
Reversing the direction of the carriage, switches which ray is indefinitely long and which ray is indefinitely short.
And so, by the Relativity of Motion, each ray, aft and fore, has an indeterminate length.
And since the train carriage has an indeterminate absolute speed (due to the Relativity of Motion,) it follows that the lengths of the optical rays inside the carriage, are indefinite. They can both be anything or nothing.
Since these light rays can have enormous lengths-- galactic distances, or nothing, it is not hard to understand why these light rays reach M' simultaneously, on the moving carriage, with ease.
And so,-- is this why all trains everywhere, have the light arriving at the middle M or M' simultaneously ?
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The length of a light ray-like any length-depends on the reference frame, it’s not invariant under Lorentz transformations. The phase of a light ray, however, is invariant under Lorentz transformations. That’s why it makes sense to’focus on the phase and not on the length.
All this is now the topic of university courses, it’s not a research topic anymore. It doesn’t make sense pretending to live along with Einstein.
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Cf. below, Dingle--Michelson Morley experiment. Case of receding mirrors.
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For the case (below) of mirrors receding uniformly away from the lamp, it is a certainty, that, while we are stationary with the lamp, both rays will make it back to the lamp simultaneously.
Next we journey to the right and look at the happenings at the lamp. Once again (obviously) the light makes it back to the lamp simultaneously.
Now we project "real motion" into the system, by saying we are "stationary" with the man moving to the right. We see the apparatus as a whole journey to the left.
Now we witness the top ray bending as it navigates its path to the left and up to the receding mirror, and back down again to arrive simultaneously at the lamp.
If you deny it, you will have to explain how this top ray navigates to the left, and upward, to the receding mirror, without bending, in its effort to get back to the lamp simultaneously with the the other ray, as it must.
You will also have to demonstrate how it is to do this, without bending "in flight".
And it can only bend "in flight" if it knows it is headed to an absolute event that lies in the future, and for which it must reach (at all costs,) in order for the reality to be consistent among the observers.
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The answer to the question is, No. The text simply highlights the confusion about what the Michelson-Morley experiment was about, namely to detect uniform relative motion of the separator mirror with respect to the frame in which the light waves were moving. As is expected by studying the properties of the wave equation, such relative motion should be absent. The experiment probed whether, indeed, Maxwell’s equations were equivalent to the wave equation and found that they were.
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The former is the notion of the "Relativity of Simultaneity". This is not actually the case. Instead, there is a tapestry of Absolute events, in the manner of Newton.
The proof of this is given in the Einstein train-embankment thought experiment. Cf.
Here, Einstein says the man on the moving carriage at M' would receive the light rays -one after the other.- But due to the "relativity of motion" due to this symmetry-- he would actually receive these rays simultaneously. The event at M' (or M) is Absolute. (This was noticed by A. A. Robb the "Euclid of Relativity," and is why he entitled his book "The Absolute relations of Time and Space".)
In the latter, it is the notion that Special Relativity (ie. the relativity of motion) can be generalised to "relatively accelerated frames". This is not the case, as proved here :
This error was also noticed by V. Fock, and stated in one of his treatises :
"We call the theory of Einstein space the Theory of Gravitation, not the " general theory of relativity ", because the latter name is nonsensical."
Then there are well known objections by Dingle, Barter and Bergson to do with clocks that run both faster and slower, and rods that are both longer and shorter.
We have yet to investigate the observations of Dr. Lynch. Cf. Western Mail & South Wales News, Thursday, May 5, 1932
Are there any other provable errors in Special Relativity, or in General Relativity (theory of Gravity) ?
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Believers in SR and GR provide "irrefutable proof" of their validity.
Believers in SR only provide "irrefutable proof" of its validity and "irrefutable proof" that GR is invalid.
Believers that neither SR nor GR are valid provide "irrefutable proof" that they are invalid.
Where does that leave us?
This leaves only the upcoming generation to sort things out.
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Einstein tries to justify (below) that an accelerated reference frame (train carriage) may be considered "at rest" but in an equiv. gravitational field. However, the frame it is moving relative to would then be without an equiv. gravitational field, and so two frames are not exactly equivalent, as they were when we were dealing with uniform motion.
Also, in the below, he confuses the situation by having the equiv. gravitational field in the embankment frame. But it is the carriage where the force is experienced, and so this is where the an equiv. gravitational field would be. The other frame (the embankment,) accelerating away (relativity,) would be the one, in this case, without the equiv. gravitational field.
So "Relativity of Motion" does not transfer to accelerated motion, and so there is no "Generalisation" of Special Relativity. Accelerated motion has to be considered as absolute, and not "relative", because the two frames (moving and still) are not exactly equivalent. (One of them has an equiv. gravitational field in it, and the other doesn't, or vice versa,).
And so, surely it has to be the case, that the "General Relativity" is only a theory of gravity, not a generalisation of "The Relativity of Motion" (Special Relativity.) ?
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Cf. Relativity. The Special And General Theory. 1920 Methuen & Co Ltd.
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Einstein's argument to extend the relativity of motion to accelerated motion (general relativity) is based on his equivalence principle, which states that gravitational and inertial forces are of a similar nature and often indistinguishable. In other words, the effects of gravity are equivalent to the effects of acceleration, and vice versa. For example, an observer in a freely falling elevator would feel weightless, as if there was no gravity, while an observer in a rocket accelerating at 9.8 m/s^2 would feel the same gravitational force as on Earth.
Einstein's equivalence principle implies that there is no absolute distinction between inertial and non-inertial frames of reference, and that gravity is not a force but a manifestation of the curvature of spacetime. Therefore, the laws of physics should be the same in all frames of reference, whether they are at rest or accelerating, as long as they are locally flat (i.e., small enough to neglect the curvature effects). This is the basis of general relativity, which is a generalization of special relativity that can account for gravity and accelerated motion.
However, Einstein's equivalence principle is not a proven fact, but a postulate that has been tested and confirmed by many experiments and observations. There may be situations where the equivalence principle breaks down or is violated, such as in quantum gravity or alternative theories of gravity. Therefore, Einstein's argument to extend the relativity of motion to accelerated motion (general relativity) is justified as long as the equivalence principle holds true.
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Is there a misspeak in Einstein's train and embankment thought experiment, as described by Einstein in the 1952 edition of his book "Relativity, the Special and General Theory" ?
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I suppose you could argue that Einstein meant it, loosely speaking.
But since the whole of reality hinges around this conception, it is probably not remiss to bring it up.
On page 26, Einstein says, in relation to the famous train and embankment thought experiment --see below. "Hence the observer will see the beam of light emitted from B earlier than he will see that emitted from A."
But if we compare this statement with the animation found here (scroll 1/4 way down) :
we notice that as far as the observer moving with the train, situated at M', is concerned,--- according to what he can possibly know (he can't know of things distant to him) -- the light flashes reach him simultaneously, and that is all he can know. What I mean to say is that statement "Hence the observer will see the beam of light emitted from B earlier than he will see that emitted from A" is not true, (as it is worded.) He will see no such thing. If this observer were moving, say to the left, within the carriage, then it is true that "Hence the observer will see.." -- but instead he is fixed in the middle at M', of the moving carriage, and from his perspective he will only know that two flashes reach him simultaneously.
So either Einstein's description of what the observer in the carriage would see is wrong, or the animation showing the light rays reaching the middle of the carriage is wrong.
I say wrong, but really this can be thought of as "loosely speaking"- but it is important to be clear about this, for the reasons outlined above.
In one of A. A. Robb's treatises, he says : "Thus, according to the view here adopted, the only really simultaneous events are events which occur at the same place."
And the two light rays meeting in the middle of the train carriage (in the above example) will always be "at the same place" and will always be "simultaneous," and this goes for what-ever frame. They can't be "simultaneous" and "at the same place" in one frame and not in another.
This is a very confusing subject, and I have been confused before, so I apologize in advance, if the above arguments are error.
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The original experiment of Sagnac was performed in air with mirrors.
A source of light S was set on a clockwise rotating platform of radius R. Its emission was split into two beams by a crystal, heading in opposite directions.
Beam A was directed through a set of mirrors clockwise, and beam B counter-clockwise.
If the experiment was performed at rest (NO ROTATION) since the path of light is exactly of the same length L, the light would arrive at the interferometer C set at the at once.
The arrival time of A and B at C, considering the angular speed of the platform omega was different.
The difference in the arrival time depended exclusively on the longer path that A had to cross in comparison to B.
Between emission from S and absorption by C, beam A was chasing C, while beam B facing C had to cross a length shorter than L.
A had to cross a longer path than L, depending on the speed of C: v=omega*R along the path L.
For an observer at rest with the center of rotation:
the time taken by A to reach C is L/c * 1/(1-v/c)
time for a beam to chase a moving target (sort of a Doppler of time)
The time taken B to reach C is L/c * 1/(1+v/c)
the difference is
L/c * 1/(1-v/c) - L/c * 1/(1+v/c) = L/c /[1-(v/c)2] = L/c gamma2
where v=omega R
(for the observer in motion that would correspond to L/c gamma).
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Hello,
I am trying to design a nonlinear observer to estimate states for adaptive cruise control purpose. The first problem I have faced was to find an appropriate model of the vehicle( longitudinal or lateral ) with tyre forces being unknown(to be estimated). Where can I find a useful model that describe the vehicle dynamics including adaptive cruise control equations.
Thank you.
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Why isn't the velocity of light given by the speed of the observer plus the speed of the light (addition of velocities)?
Why does the light ray slow down and compensate or speed up and compensate for your motion, so that it is always travels at the speed of light? notwithstanding your motion?
In short, what is the mechanism that means the velocity of light always remains the same, irrespective of the motion of the torch issuing the light ray?
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Light particle is a minimum known particle in the whole Universe, it has limited speed about 300,000 km/second. The light speed still low speed as compared to the size of a Universe because light particle faced to resistance of dark matter particle in space, it means that the space is not vacuum 100%, it is faced to hidden objects are dark fabric particles. Sincere Sabir Sadiq
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Who can tell me why Dingle's objection to Special Relativity-- the same one that appears in Barter's book "Relativity and Reality- a re-intepretation of the anomalies appearing in the Theory of Relativity" is in error?
This objection in gone into in some depth in Barter's book, in a chapter called "Some Paradoxical Result of Reciprocity".
And is the following :
The problem is : to one observer the other appears to have a shortened rod, and to the other observer, the shortened rod is with the first observer. They can't both be right.
The same is true of time. To one observer the hands of the other chap's clock run slow, while to other observer the hands of the first chap's clock run slow. They can't both be right.
In both cases above we have a perfectly symmetrical experimental setup-- each observer is moving uniformly with respect to the other observer. All is identical.
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or as Dingle puts it :
" special relativity unavoidably requires that A works more slowly than B and B more slowly than A — which it requires no super-intelligence to see is impossible."
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My view is that Dingle and Barter are not wrong--- but that a new way of looking at it is required. I think this way is "intersubjectivity". It's the observers that have to be brought into the problem, just as they were in Quantum Theory.
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Like solve_ivp or odeint in python, which shows warning messages if there arises any discrepancy during runtime, in Boost odint we need to create observer for that. I just want to know is there any predefined observer exist to handel all kind of errors and warnings message, or we have to creat for our own?
I have checked in boost odeint there are odeint_error.hpp and exception.hpp, but they can't be used directly.
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Who can tell me why Dingle's objection to Special Relativity-- the same one that appears in Barter's book "Relativity and Reality- a re-intepretation of the anomalies appearing in the Theory of Relativity" is in error?
This objection in gone into in some depth in Barter's book, in a chapter called "Some Paradoxical Result of Reciprocity".
And is the following :
The problem is : to one observer the other appears to have a shortened rod, and to the other observer, the shortened rod is with the first observer. They can't both be right.
The same is true of time. To one observer the hands of the other chap's clock run slow, while to other observer the hands of the first chap's clock run slow. They can't both be right.
In both cases above we have a perfectly symmetrical experimental setup-- each observer is moving uniformly with respect to the other observer. All is identical.
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or as Dingle puts it :
" "special relativity unavoidably requires that A works more slowly than B and B more slowly than A — which it requires no super-intelligence to see is impossible."
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My view is that Dingle and Barter are not wrong--- but that a new way of looking at it is required. I think that way is "intersubjectivity". It's the observers that have to be brought into the problem, just as they were in Quantum Theory.
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Once more: it’s wrong, because it doesn’t make the distinction between quantities that are invariant under l9bal Lorentz transformations and those that aren’t.
There isn’t a principle of relativity, if it doesn’t mention the transformations.
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I want to use Kalman filter to estimate battery parameter and observer for state estimation together (SOC)
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You may try graphical state space model solved by factor graph optimization.
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The measurement problem in quantum physics shows that an observer can manipulate the outcome of experiments studying the behaviour of light (Young, 1802 double-slit experiments) and control whether light will manifest as a particle or a wave (Bohm, 1952; Cho, 2017; Kocsis et al., 2011). This shows that consciousness may be compatible with light or may be able to communicate with light (Kroeker, 2019). I was wondering if consciousness could be quantized if the observer effect experiments were reversed engineered to measure the behaviour of consciousness, rather than the behaviour of light?
Discuss...
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Anything in the Multi-Universw can be quantized and both continuized.
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Is the -apparent- progress of light, along the left and right-hand limbs, different for different observers?-- in the standard arrangement for the Relativity of Simultaneity, as suggested by the animation in "apparent pogress.docx" .
And if so, just considering the right-hand limb, why can't we place an event E, such that, for one observer the light has already reached and enveloped it, while for another observer, the light has yet to reach it, -- as viewed by these two different observers?
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In the "apparentprogress__.docx" attached above, it is to be noted that we have two cases : an observer stationary with the plank of wood, and an observer moving uniformly to the left with respect to the plank of wood.
These are the two frames discussed.
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The reason why the light rays issued from the left and right ends of the plank of wood must meet in the middle, as shown in the animation, is only obvious when one considers an event placed in the middle that might be triggered only by the arrival of BOTH light rays at that one place at the same time, say as viewed by the stationary observer.
And so for the observer moving uniformly to the left, or any other observer for that matter, that same event would also have to triggered, or we would be left with two realities. That event can only trigger if, in all these other frames, the light arrives at the same place (in the middle) at the same time.
This is why the light must hasten along one limb, and lag along another, as viewed by the observer moving uniformly to the left, in order to reach the middle of the plank of wood "on time" so to speak.
This reality requirement for this standard setup is discussed here:
A Discussion on the Relativity of Simultaneity
October 2021
Xinghong Wang
We don't agree with the conclusion in Wang's paper, that “The relativity of simultaneity is not a valid theory". All that is demonstrated here, is that the light must reach the middle in all frames (which is does in our animations).
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Is the -apparent- progress of light, along the left and right-hand limbs, different for different observers?-- in the standard arrangement for the Relativity of Simultaneity, as suggested by the animation in "apparent pogress.docx" .
And if so, just considering the right-hand limb, why can't we place an event E, such that, for one observer the light has already reached and enveloped it, while for another observer, the light has yet to reach it, -- as viewed by these two different observers?
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In the "apparentprogress__.docx" attached above, it is to be noted that we have two cases : an observer stationary with the plank of wood, and an observer moving uniformly to the left with respect to the plank of wood.
These are the two frames discussed.
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The reason why the light rays issued from the left and right ends of the plank of wood must meet in the middle, as shown in the animation, is only obvious when one considers an event placed in the middle that might be triggered only by the arrival of BOTH light rays at that one place at the same time, say as viewed by the stationary observer.
And so for the observer moving uniformly to the left, or any other observer for that matter, that same event would also have to triggered, or we would be left with two realities. That event can only trigger if, in all these other frames, the light arrives at the same place (in the middle) at the same time.
This is why the light must hasten along one limb, and lag along another, as viewed by the observer moving uniformly to the left, in order to reach the middle of the plank of wood "on time" so to speak.
This reality requirement for this standard setup is discussed here:
A Discussion on the Relativity of Simultaneity
October 2021
Xinghong Wang
We don't agree with the conclusion in Wang's paper, that “The relativity of simultaneity is not a valid theory". All that is demonstrated here, is that the light must reach the middle in all frames (which is does in our animations).
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If we are to correct the long-range action of the global inertial frame of Newtonian mechanics, shouldn't we make it the close action of the relative velocity of light?
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Shinsuke Hamaji The thought experiment linked below shows that the postulates of Special Relativity cannot be maintained and the Lorentz transformation of coordinates has to be discarded:
link
Then the postulates of special relativity are replaced with the concept of a space rest frame.
link
The conclusion is that distance is invariant between moving frames of reference but objects experience length contraction depending on their velocity v relative to the space rest frame K0.
Richard
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The Hawking temperature $T_h$ is proportional to the surface gravity $\varkappa$ which, in spherical-symmetric case, one calculates on the Killing horizon. This temperature is very small but where? at infinity? Then if we use the formula $T\sqrt{g_{00}}=const$ then, one obtains infinity temperatures near the event horizon. Help me with this question please. I thought that one measures $T_h$ near the event horizon and the temperature near the horizon is small. Or my opponents are right and this temperature is measured in infinity?
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No, it's not like the early universe (a black hole's event horizon is a future horizon, not a past horizon).
Yes, the formula isn't universally valid, for, among other reasons, because the components of the metric aren't observable quantities-they're gauge fields. The Hawking temperature makes sense as an observable at infinity-assuming that the spacetime is asymptotically flat there.
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I am working on observer based active fault tolerant control( Fault detection and isolation (FDI) scheme) for handling sensor faults in a system. The system has also a dynamic disturbance component also which is difficult to have a proper observer design to design the FDI of the FTC scheme. I would like to know the effective methods to handle such situations with observer based FTC schemes. How to handle the issues of disturbance modelling and threshold selection in such schemes? Also what could be the limitations for such schemes?
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Thank you for the response Rim Hamdaoui. I would definitely look into the resources suggested by you.
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Apropos: the Andromeda paradox.
Can anyone tell me which of the below, if any, describe the arrangement in the Andromeda paradox?
For event 1 I am assuming this to be 'the decision' to launch the fleet, and for event 2 I am assuming this to be a later event signifying that the 'fleet is deployed'. Event 2 occurs after event 1, of course, for the Aliens.
According to the paradox, the light from these events reaches the observers in such a way that event 1 is seen first by one observer, and while event 2 is seen first by the other observer?
If that is what the paradox is saying, can anyone explain (ideally with an animation or a picture) how this happens?
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Cf. full answer attached.
CW1 = Discussion. Special Relativity and Determinism. C. W. Reitdijk
CW2 = A Rigorous proof of determinism derived from the Special Theory of Relativity - C. W. Reitdijk
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Apropos: the Andromeda paradox.
Can anyone tell me which of the below, if any, describe the arrangement in the Andromeda paradox?
For event 1 I am assuming this to be 'the decision' to launch the fleet, and for event 2 I am assuming this to be a later event signifying that the 'fleet is deployed'. Event 2 occurs after event 1, of course, for the Aliens.
According to the paradox, the light from these events reaches the observers in such a way that event 1 is seen first by one observer, and while event 2 is seen first by the other observer?
If that is what the paradox is saying, can anyone explain (ideally with an animation or a picture) how this happens?
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Cf. full answer attached.
CW1 = Discussion. Special Relativity and Determinism. C. W. Reitdijk
CW2 = A Rigorous proof of determinism derived from the Special Theory of Relativity - C. W. Reitdijk
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How to calculate the gain matrix of Luenberger /state observer?and also what is the role of eigen values during the mathematical modeling?
The current system have 2 input and 2 controllable states. The system is observable.
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Hi Habib,
if your system has a single output, I believe you can use Ackermann's formula (acker in Matlab, use the dual property for observers). In this formula you have to provide a polynomial whose roots are the eigenvalues you want. As for the choice of the eigenvalues the basic rules are: 1) the should be faster (2 to 4x) than the closed-loop intended, that is faster than the eigenvalues resulting from pole-placement, 2) but the faster they are the wider will be the passing band of the system and if you have noise, that could be an issue.
Regards.
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We have developed an arrangement in the Relativity of Simultaneity framework that must be wrong, as we cannot have a situation where two events, situated at the same place (event E, and an arrival of light event) are switched in time-order, for two different observers moving uniformly (or non-uniformly) relative to these events.
Is it that the placement of event E in animation Figure 4 is somehow not allowed?
Is it that it is not always possible to make two events separated in space simultaneous? by suitable choice of the motion of the observer? (cf. Einstein's train gedenken experiment.)
If anyone can pinpoint the error, much appreciated.
Vide : "Short Precis" below for desciption of new arrangement and animations.
See also question: