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# Electromagnetism - Science topic

Explore the latest publications in Electromagnetism, and find Electromagnetism experts.

Publications related to Electromagnetism (10,000)

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In this paper, we review and discuss the main properties of the time-reversal operator T and its action in classical electromagnetism and in quantum mechanics. In particular, we discuss the relation (and differences) between time-reversal invariance and reciprocity.

Did you ever wondered if what we perceive as Time really exists, or is it just an illusion?
Did you also ever wondered if what we perceive as Space really exists, or is it also just an illusion?
Did you ever wondered from which entities our Universe is actually composed?
Would you be surprised to find out that the Universe is actually composed of o...

For any experiment with two entangled photons, some joint measurement outcomes can have zero probability for a precise choice of basis. These perfect anti-correlations would seem to be a purely quantum phenomenon. It is therefore surprising that these very anti-correlations are also evident when the input to the same experiment is analyzed via clas...

In this article it will be structured a new formalism making able the reader to appreciate the very quantum nature of electromagnetism here exposed on a new quantum formalism of a physical quantum rule, found by the author and reported in[1] where It can be thought, the latter being the very first attempt, made in order to introduce the quantum mec...

This book, Theory of Gyroscopic Fields, presents a new description of two types of movement already known in physics, such as rotation and precession of objects and which, according to the theory presented here, experience in a unified way, that is, that is, according to the same mathematical model, both solid and fluid bodies.
Said unification is...

Contribution: This research designs an experimental education project of an automatic material magnetism properties measurement system. It explores how the do-it-yourself (DIY), hands-on establishment, and hardware–software integration experiment system could be leveraged to enhance the understanding of the electromagnetism theory and nonelectrical...

The book postulates the existence of two new fundamental forces of nature related to rotational and precession, introducing the field equations of the theory in a Maxwell-like fashion.
These new forces should be added to the four well-known fundamental forces of nature: Gravitation, Electromagnetism, Strong Nuclear and Weak Nuclear, and they must...

Accelerated charges emit both electromagnetic and gravitational radiation. Classically, it was found that the electromagnetic energy spectrum radiated by an electron in a monochromatic plane wave is proportional to the corresponding gravitational one. Quantum mechanically, it was shown that the amplitudes of graviton photoproduction and Compton sca...

We develop some ideas about gauge symmetry in the context of Maxwell's theory of electromagnetism in the Hamiltonian formalism. One great benefit of this formalism is that it pairs momentum and configurational degrees of freedom, so that a decomposition of one side into subsets can be translated into a decomposition of the other. In the case of ele...

Interaction between groundwaters with different salinities and lakes show seasonal variations driven by changes in precipitation and evapotranspiration. In the vicinity of Villafáfila lakes, local fresh and brackish regional groundwaters feeds the lakes, forming a brine in the lake sediments aquitard. Two TDEM surveys (summer 2019 and winter 2020)...

The aim of the research presented in this article is to examine the agreement of the hypothesis of the absolute system of reference with the outcome of experiments that have been conducted in the past to test the special theory of relativity. To accomplish this, We have selected the theoretical subject of electromagnetism for discussion, that of el...

This work completes a serie of two papers devoted to the extension of the fundamental laws of electrodynamics in the context of Fock's nonlinear relativity (FNLR). Indeed, after having established in the previous study the exact generalizations of both Maxwell's equations and Dirac magnetic monopole, we present here the remaining exact Lorentz forc...

Topological solitons have knotted continuous field configurations embedded in a uniform background, which occur in cosmology, biology, and electromagnetism. However, real‐time observation of their morphogenesis and dynamics is still challenging because their size and time scale are enormously large or tiny. Liquid crystal (LC) structures are promis...

In the domain of aeronautical industry, the risk of lightning strike is taken into account from the conception of the aircrafts as the phenomenon statistically occurs every 1000 to 10000 flight hours. As this phenomenon involves a lightning channel that is static in the terrestrial reference frame and an aircraft that can reach a speed of 100 m/s i...

Magnetohydrodynamic Nanofluid flow (Silver-water) through a converging-diverging channel under a strong magnetic field has been investigated. The induction equation is derived from electromagnetism. The non-linear partial differential equations are reduced to first-order non-linear ordinary differential equations using the similarity transformation...

Antigravity devices use non-aerodynamic methods of propulsion to create thrust-typically a directional or upward thrust from systems based usually on Electromagnetism. There are hundreds of proposed methods of creating Antigravity Effects, but they typically fall into a few broad categories of device. Antigravity is a multidisciplinary science at t...

Please download the paper and then read the abstract (since crucial formulas are not appearing in this window, and also hyperlinks are not working). This is just a brief overview:
Relativity is inside the light cone phenomena, while Quantum Mechanics is outside the light cone phenomena, dictated just by the scale (i.e. whether we use classical/hum...

A bicicleta geradora de energia foi um experimento construído de modo a explorar leis fundamentais da física relacionadas ao conceito de energia. Este experimento que foi apresentado a alunos de duas escolas diferentes do litoral norte paulista, é diferente de uma bicicleta convencional, pois as pedaladas não movem a bicicleta que está fixa sobre u...

It has been shown that a special set of three-point amplitudes between two massive spinning states and a graviton reproduces the linearised stress-energy tensor for a Kerr black hole in the classical limit. In this work we revisit this result and compare it to the analysis of the amplitudes describing the interaction of leading Regge states of the...

It is an opeen question how physical systems arise after a Higgs or big bang HB. The author proposes an evolution, adding this to the biology and chemistry evolutions. A first setting is that color charges of quarks CC are present in dark matter as 1-dimensional lemniscate retracts of quarks. The usual Lie groups or algebras approach is not used fo...

The Kern fiber bundle is an invention of the author. Used is the factor topological S 5 of the S 3 x S 5 geometry of SU(3). The fiber is a circle S 1 and the projection maps S 5 to a complex 2-dimensional projective space CP 2 with a bounding sphere S 2. This is a nucleons space with two spacelike coordinates and x +iy for the plane of a quark tria...

Con el desarrollo de la tecnología, la actividad de aprendizaje toma unos métodos y enfoques diferentes. Entre estos enfoques, podemos hablar de aprendizaje virtual utilizando los sistemas de gestión del aprendizaje y el concepto de aula invertida. La plataforma Moodle representa uno de estos sistemas. La limitación de esta Plataforma es la falta d...

After introducing Leonardo da Vinci’s (LdV) predecessors in the field of light propagation research, his drawings on the topic of reflecting light by a spherical mirror are analysed. The discovery of LdV is presented, according to which, at an infinitely distant source of rays, a small fragment of the canopy is enough to generate a focus, while the...

Project/problem-based learning, as an active methodology, improves significantly the learning process, making students take an active role in the construction of their own knowledge, and at the same time, develop soft and social skills that are critical in the success of their student career and professional field. In this work, an entertaining gam...

We describe here the coherent formulation of electromagnetism in the non-relativistic quantum-mechanical many-body theory of interacting charged particles. We use the mathematical frame of the field theory and its quantization in the spirit of the QED. This is necessary because a manifold of misinterpretations emerged especially regarding the magne...

In this work, we review the main existing theories for the electromagnetic stress–energy tensor in dielectric media – a problem directly related to the century-long debate regarding the correct momentum of light in dielectric media, known as Abraham-Minkowski controversy. The theoretical validity of the main existing formulations is analyzed in ter...

Using the well known complex representation of the proper Lorentz group SO+(3,1)≅PSL(2,C)≅SO(3,C)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathrm {SO}_+(3,1)\con...

We revisit Minkowski's lost legacy on relativistic electromagnetism in order to resolve long-standing puzzles over the charge distribution of relativistic systems like hadrons. Hadrons are unique relativistic electromagnetic systems characterized by their comparable size and Compton wavelength $r_h \sim \lambda_C$. As such, it was recently realized...

The main objective of our work is to design simple, low-profile and relatively high gain antenna topologies with ultra-wide Band operation. For this reason, we went to use the printed resonator antennas. They have been the subject of several researches and have acquired a great interest of the academic and industrial world. The printed antennas, by...

Employing a non-perturbative approach based on an instantaneous interaction between a two-level Unruh-DeWitt detector and a massive scalar field, we investigate the ability of the field to generate or destroy coherence in the detector by deriving the cohering and decohering power of the induced quantum evolution channel. For a field in a coherent s...

This Resource Letter provides a guide to the literature on teaching experimental physics using sensors in tablets, smartphones, and some specialized devices. After a general discussion of the hardware (sensors) and the software (apps), we present resources for experiments using mobile-device sensors in many areas of physics education: mechanics, os...

Multiphysics is a computational discipline which treats simulations that involve multiple physical models or multiple simultaneous physical phenomena. For example, combining chemical kinetics and fluid mechanics or combining finite elements with molecular dynamics. Multiphysics typically involves solving Coupled Systems of partial differential equa...

Piezoelectric-driven multi-degree-of-freedom motors can turn off self-lock, withstand high and low temperatures, are small in size and compact in structure, and can easily achieve miniaturization. However, they have a short life cycle and limited applications. In addition, high-intensity operation will result in a decrease in their stability. Elect...

RESUMEN El presente artículo propone el diseño y simulación de una antena de microcinta con polarización circular en dos bandas de frecuencias 2.4 GHz y 5.2 GHz, supresora del segundo y tercer armónico de las frecuencias fundamentales mediante el empleo de metamateriales, a través de una línea de alimentación de microcinta y el plano tierra ranurad...

Using a metric based on solutions for the scalar of a 5-dimensional Kaluza model in the field equations for curved space-time allows to derive a convergent series of particle energies, to be quantized as a function of the fine-structure constant, α, with limits given by the energy values of the electron and the Higgs vacuum expectation value. The v...

We study the Joule-Thomson expansion in Einstein-Maxwell theory supplemented with the so-called quasi-topological electromagnetism, this in the extended phase space thermodynamic approach. We compute the Joule-Thomson coefficient and depict all relevant inversion and isenthalpic curves in the Temperature-Pressure plane, determining in this manner t...

Assembling the pieces of the amazing puzzle of this universe is one of the most important and rewarding scientific endeavors humanity has undertaken. The more we understand of this puzzle, the more we can do to utilize scientific advances to dramatically improve our world and our lives. As we carefully consider the experimental evidence, and all th...

We have recently found the empirical concise relation between the Gravity constant and the parameters of the Quantum Electrodynamics [1] which despite of the gravity geometric interpretation making it unusual to quantize the geometry as fluctuations and its space-curving influence on the electromagnetism also reversely causing the gravity through t...

This is a PowerPoint presentation of the gravity theory presented on Youtube in 2016. It proposes that gravity is a consequence of electromagnetic interactions within and between atoms.

The surface plasmon resonance (SPR) is a phenomenon based on the combination of quantum mechanics and electromagnetism, which leads to the creation of charge oscillations on a metal–dielectric interface. The SPR phenomenon creates a signal which measures refractive index change at the metal–dielectric interface. SPR-based sensors are being develope...

Since the birth of physics, our understanding of force has gradually deepened, and the exploration of gravity, electromagnetism, weak force and strong force has continued to deepen. However, a troubling question remains unresolved: the internal connection and unity of these four forces. This paper first explains the theory of the origin of force fr...

A six dimensional manifold of symmetric signature (3,3) is proposed as a space structure for building combined theory of gravity and electromagnetism. Special metric tensor is proposed, yielding the space which combines the properties of Riemann, Weyl and Finsler spaces. Geodesic line equations are constructed where coefficients can be divided into...

Cosmic Birefringence (CB) is the in-vacuo rotation of the linear polarization direction of photons during propagation, caused by parity-violating extensions of Maxwell electromagnetism. We build low resolution CB angle maps using Planck Legacy and NPIPE products and provide for the first time estimates of the cross-correlation spectra $C_L^{\alpha...

One of the most notorious and confusing subjects of physics is Electromagnetism or Electromagnetic force (EMF), which is described as one of the four fundamental physical interactive forces that occurs in eclectically charged particles. The action creates electromagnetic fields which are composed of an electric field and a magnetic field where it i...

We present a mechanical model of a quasi-elastic body (aether) which reproduces Maxwell’s equations with charges and currents. Major criticism (in: Sommerfeld, Mechanics of deformable bodies, lectures on theoretical physics, Academic Press, Inc., London, 1964) against mechanical models of electrodynamics is that any presence of charges in the known...

Due to their narrow reflection peak as well as their compact structure, guided mode resonance filters (GMRFs) are attractive for many applications. In this work, we will demonstrate the possibility to modulate the properties of a GMRF by associating it with liquid crystals (LCs). By impregnating the diffraction grating with LCs, it is possible to s...

This article is composed of three independent commentaries about the state of Integrated, Coordinated, Open, Networked (ICON) principles (Goldman et al., 2021, https://doi.org/10.1002/essoar.10508554.1) in the Geomagnetism, Paleomagnetism, and Electromagnetism (GPE) section and discussion on the opportunities and challenges of adopting them. Each c...

When inductively coupled plasma (ICP) is used as a machining tool, its chemical etching-based processing method has the advantage of no contact stress between the tool and the material, thus without any mechanical damage. In recent years, this issue has been widely concerned in optical fabrication. However, there are many differences between low po...

A productive, informative three decades of correlates of phenomenal consciousness (P-Consciousness) have delivered valuable knowledge while simultaneously locating us in a unique and unprecedented explanatory cul-de-sac. Observational correlates are demonstrated to be intrinsically very unlikely to explain or lead to a fundamental principle underly...

What today we call Truesdell rate of the Cauchy stress was originally introduced by Truesdell, as a frame-indifferent measure of stress rate for his theory of hypoelasticity. This work aims at showing that the Truesdell rate is in fact a more general concept, which arises from the application of Reynolds’ Transport Theorem. In the customary three-d...

Die Lorentz-Kraftgleichung F= q(E + v×B), die seit Anfang des 20. Jahrhunderts von der Ingenieurgemeinschaft zur Steuerung der Bewegung von Elektronen auf freien Bahnen in einem breiten Spektrum von technischen Anwendungen verwendet wird, ist eine allgemeine Gleichung, die ursprünglich von Hendrik Antoon Lorentz zu Beginn des 20. Jahrhunderts entwi...

The Lorentz force equation F= q(E + v×B), which has been used by the engineering community since the early 20th century to control the motion of electrons on free trajectories, in a wide range of technical applications, is a generalized equation that was originally developed by Hendrik Antoon Lorentz at the beginning of the 20th century, and which...

La ecuación de fuerza de Lorentz F= q(E + v×B), utilizada por la comunidad de ingenieros desde principios del siglo XX para controlar el movimiento de electrones en trayectorias libres en una amplia gama de aplicaciones técnicas, es una ecuación generalizada que fue desarrollada inicialmente por Hendrik Antoon Lorentz a principios del siglo XX, y q...

We have recently found the empirical concise relation between the Gravity constant and the parameters of the Quantum Electrodynamics [1] which despite of the gravity geometric interpretation making it unusual to quantize the geometry as fluctuations and its space-curving influence on the electromagnetism also reversely causing the gravity through t...

We remarkably find that the prefactor of our formula expressing the gravitational constant in terms of the Quantum electrodynamics parameters [1] G = 4/3/2^(1/38) hbar c/m_e^2 alpha^21, 4/3/2^(1/38) equals with very good approximation to the phi^2/2 (the square of the Golden Ration divided by two which is also equal to the golden ration plus one de...

Cesaretti e Tajmar presto su Research Gate e altrove quando sarà pronto un paper sperimentale più dettagliato circa l'inabilità di capire da parte loro le basi della PNN sperimentale. Infatti il paper si titolerà purtroppo "PNN per Quozienti Intelletivi bassi" In un Paper PNN più voluminoso di quanto segue [Poveri gothalist www.asps.it/gotha.htm sa...

The whole element in the world is related to each other. Everything is relative. There is no possible way by which one can say that there exists a state of absolute rest or motion. In relativity, the measure of speed is done relative to the speed of light. This is why relativity makes itself noticeable. The entire idea of relativity was given by Si...

The original theme proposed in February 2022 by author Emmanouil Markoulakis was:
Is electromagnetism an intrinsic phenomenon of the electron?
But on April 10th one of the participants, Stellan Gustafsson, asked the following question:
Why is the charge of the electron exactly equal to that of the proton charge?
And that question gave rise to a n...

Electromagnetism is the energy originating from an electric charge. Our purpose is to enlarge Maxwell. Include the charge transfer phenomenology. A four bosons electromagnetism is derived. An EM completeness is achieved. The charge's set $\{+,0,-\}$ is intermediated by a quadruplet $\{A_{\mu}, U_{\mu}, V^{\pm}_{\mu}\}$. They are the usual photon $A...

Como parte de la conmemoración de los 75 años del descubrimiento del transistor bipolar, se presentan visiones retrospectivas y prospectivas de la evolución de los distintos tipos de transistores, y de cómo continuarán haciéndolo. Se repasan algunos conceptos básicos, como qué es un transistor y cómo es uno típico hoy día. Se continúa resaltando lo...

The commercialization of the sub-orbital environment, the ambition to make humans a multi-planetary species, and the urgent need for sustainable space operations are driving the development of a new generation of space systems. The use of electromagnetic forces (and electromagnetism, in general) is proposed in this dissertation to enable mid-distan...

La modificación metodológica, a través de la metodología de Aula Invertida,se hace
posible migrando de la Metodología Experimental de Enseñanza, en donde la forma de
aprendizaje de los alumnos se basa en el desarrollo de una serie de actividades dadas en
una guía de laboratorio, a otra metodología activa de enseñanza, en la cual el alumno
adquiere...

New broadband (>1 MHz) pressure sensors are regularly reported in the literature to measure the overpressure of blast waves. However, the frequency bandwidth needed to accurately measure such overpressure has not yet been clearly discussed. In this article, we present a methodology to determine the bandwidth required to estimate the overpressure ma...

This is the Introduction to a new book "A Novel Approach to Relativistic Dynamics. Integrating Gravity, Electromagnetism and Optics" which is planed to be published Fall 2022

A perpetual motion machine is a hypothetical machine which can run indefinitely as an isolated system. The existence of such a device is ruled out by the laws of thermodynamics, but the concept remains popular. In this article, we analyse a fake perpetual motion machine in which a ball endlessly falls through a hole in a platform and slides down a...

The search for materials exhibiting nanoscale spiral order continues to be fuelled by the promise of emergent inductors. Although such spin textures have been reported in many materials, most of them exhibit long periods or are limited to operate far below room temperature. Here, the real‐space observation of an ordered helical spin order with a pe...

Demonstração matemática e explicação conceitual das equações de Poisson e de Laplace para eletromagnetismo. (Considerando apenas casos invariáveis no tempo).

This paper discusses the speed of an electromagnetic wave as a variable which depends on its medium of propagation.
It obtains initial perspective from classical electromagnetism, and proposes the possibility of Super-c travel in certain mediums. These mediums are described algebraically in terms of their electrical permittivity ε and magnetic per...

Principle points addressed by this article –
1) According to Special Relativity, experiments are overrated by modern science since the truths revealed by experimentation are necessarily restricted to one frame of reference.
2) According to the summary of vector-tensor-scalar (VTS) geometry, interaction of gravitation and electromagnetism produces a...

Closed formulas in terms of double sums of Clebsch-Gordan coefficients are computed for the evaluation of bra-ket spherical harmonic overlap integrals of a wide class of trigonometric functions. These analytical expressions can find useful application in problems involving non-separable wave equations, e.g. general-relativistic perturbation theory,...

Streszczenie. Artykuł dotyczy zagadnień komunikacji naukowej, w tym indeksowania artykułów w bazach międzynarodowych (Web of Science CC, Scopus) i chińskich instytucji, w tym uczelni technicznych. Jednym z istotnych zagadnień dla oceny jakości pracy naukowca jest możliwość dzielenia się wynikami swoich prac badawczych z innymi naukowcami. Z uwagi z...

In this article, we present a fractional Kersten-Krasil'shchik coupled KdV-mKdV nonlinear model associated with newly introduced Atangana-Baleanu derivative of fractional order which uses Mittag-Leffler function as a nonsingular and nonlocal kernel. We investigate the nonlinear behavior of multi-component plasma. For this effective approach, named...

Este trabalho mostra que é possível entender as características essenciais das ondas gravitacionais emitidas pela coalescência de sistemas binários a partir dos conhecimentos de física básica. Empregamos não mais do que conceitos abordados nos cursos introdutórios de mecânica e eletromagnetismo de uma graduação em ciências exatas. Derivamos cuidado...

Science historians have recognized the importance of heuristic reasoning strategies for constructing theories, but their extent and degree of organization are still poorly understood. This paper first consolidates a set of important heuristic strategies for constructing scientific models from three books, including studies in the history of genetic...

Este artigo tem como objetivo principal apresentar, de maneira sucinta e intuitiva, aspectos fundamentais da construção e do do desenvolvimento da Teoria de Yang-Mills-Shaw. Partindo do paradigma do Eletromagnetismo de Maxwell, construímos, por analogia, a teoria para campos vetoriais não-Abelianos e sua interação com a matéria. Para tal, estendemo...

This Resource Letter provides a guide to the literature on teaching experimental physics using sensors in tablets, smartphones, and some specialized devices. After a general discussion of hardware (sensors) and software (apps), we present resources for experiments using mobile-device sensors in many areas of physics education: mechanics, oscillatio...

The data explosion caused by the Internet and its applications has given researchers immense scope for data analysis. A large amount of data is available in form of images. Image processing is required for better understandability of an image. Various image processing steps are available for improving the image in different application areas. Vario...

We present an emulation design method for converting asymmetrical transmitters to nonreciprocal isolators equipped with time-varying metasurfaces. To illustrate the model, we design a structure using a combination of the photonic crystal (PhC) and time-varying metasurface. Moreover, we propose a general approach for numerical analysis of the time-m...

Physics translates scientific discoveries to technology but students’ achievement in the subject has been observed to be below expectation at all levels of education in Nigeria. Electromagnetism aspect of physics is one of the areas in physics that has been reported to be very wide in coverage and abstract in nature, but students have difficulty un...