Average values of laser spots displacement relatively the position at 0:00 on the two axes. 

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... technique to register ether flows is demonstrated in a simple experiment performed at a prototype of a proposed installation (see Fig. 1). It allows detecting ether flows with speed rates greater than ~ 20 km/s. The installation base is a wooden bar (1) with a low coefficient of thermal expansion, with the length L = 2 m. A semiconducting green laser (λ = 532 nm) with an optical power <5 mW (2) is connected to a power supply with 3V voltage. The beam splitter (3) generates an array of thin rays directed to the target (4). Through an opening in the target, several rays fall to the paper point (5) with a metal mesh and form luminescent spots of the size ~ 1 mm on it. The camera (6) makes photographic images of the spots against the background of the mesh. Fig. 2 shows an image of a test laser spot. Near the spot, there is a dark label for referencing to a coordinate system. A grid related to the mesh is used for scaling. The purpose of the experiment is to study the shift of the laser spot image relative to the target. The measurements were made at the latitude of 60 ° in a panel building. The altitude was not more than 30 meters above sea level. The installation was placed horizontally with the orientation of the laser beam to the north. The survey was carried out for three days in November-December. There were six measurements per day, at an interval of 4 hours. After measuring, we calculated the laser spots' displacement centers along the horizontal (x) and vertical (y) axes. The error of determining the coordinates of the spots' centers is ~ 50 µm. The averaged displacement values for all the days are shown in Fig. 3. The displacement values were as follows: 50±30 µm along the horizontal axis, 70±30 µm along the vertical axis. There was no periodicity in the dependencies. If it were, it would be caused by ...