Relativity and Cosmology


Speed of Light in FG5 Gravimeter

Authors: Eric Su

The absolute gravimeter measures the gravitational constant by dropping a corner cube retro-reflector in a vacuum. The light reflected by the corner cube interferes with another light from the same emission. The interference pattern can not be explained by the theory if the speed of light remains constant upon reflection. Two research teams were obliged to propose new definition of acceleration to match their test data. Neither team understands that the speed of light actually changes upon reflection by a moving mirror. The definition of acceleration should remain intact. The speed of reflected light should increase to match the observed fringe pattern from the gravimeter.

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Submission history

[v1] 2019-12-26 17:01:06
[v2] 2019-12-27 15:37:23

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