Michelson interferometer operating at effects of first order with respect to v/c (the third method of measuring the speed of "aether wind")


Ushakov State Maritime Academy, Novorossiysk, Russia

More than hundred years there persists a belief that Michelson-type interferometer can not be adjusted such as to detect effects of the first order with respect to v/c. Below I show that it is possible to measure the interference fringe shift (and thus the "aether wind") on the first order Michelson interferometer, and more successfully than on the interferometer of the second order. In contrast to the traditional approach, in the interferometer of the first order the light after splitting on a semi-transparent plate propagates in both arms to the reflecting mirrors in one optical medium (with dielectric permittivity ε1), and returns after reflection from the mirrors through another optical medium (with dielectric permittivity ε2). The shift of the interference fringe is reliably detected in the experiment when turning the interferometer by 90°. It was found to be proportional to ε1–ε2.
Experimental data are interpreted in the bounds of the Fresnel drag of light by a moving optical medium neglecting terms quadratic in v/c. The horizontal projection v of the Earth's velocity relative to luminiferous aether thus found lies in the range 140 km/s < v < 480 km/s depending on the time of the day and night at the latitude of Obninsk. This is the third method of measuring the speed of aether wind. It gives the same range of values as two earlier described methods operating at second order with respect to v/c.


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