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Physical interpretation of the fringe shift measured on Michelson interferometer in optical media
V.V.Demjanov
Ushakov State Maritime Academy, Novorossiysk
| The shift ΔXm of the interference fringe in the Michelson interferometer is absent when arm's light carriers are vacuum (n = 1) but present in measurements where the refractive index n of its light carrying media n > 1. This experimental observation induced me to interpret physical processes occurred in the Michelson interferometer in a conceptually new way. I rejected the classical rule с ± v of adding velocity v on an inertial source of the interferometer with the velocity c of the light emitted by it as inapplicable in principle to non-inertial object which electromagnetic waves just belong to, and not taking into account n of the optical medium. I used instead of this rule the non-relativistic formula of Fresnel c / n ± v (1 – 1 / n 2) for the speed of light in a moving optical medium, where n is taken into account and the condition c ' < c always holds. This formula, and accounting for the physical effect of Lorentz contraction of the longitudinal arm L|| of interferometer because of its motion in the stationary aether, enabled me to construct the theoretical model ΔXm ∼ L Δε (1 – Δε), where Δε = n 2 – 1 is the contribution of particles into the permeability of light carriers, that reproduced in essential features the parabolic dependence of ΔXm on Δε. From the experimentally measured amplitudes of shifts of the interference fringe there was estimated the horizontal projection of the velocity of the Earth relative to aether that changes in different times of day and night at the latitude of Obninsk within the limits 140-480 km/s. |
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