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Abstract


The Sagnac Effect, Once More

Franco Selleri
Year: 2012 Pages: 3
A simple and rigorous proof of the Sagnac effect for the most general value of the synchronization parameter e1 is given. If in the final result one adopts the relativistic e1 one can see that the relativistic theory is incompatible with the experimental evidence. Only the theory with e1 = 0 predicts correctly the Sagnac effect. Of course the obtained results depend on the assumptions made, which look rather safe however.
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John-Erik Persson
Sagnac effect
1 decade 1 year ago [2012-06-19 09:19:52]
The interferometer compares in real time and the signals have started from the source at different times but arrives simultainously. By moving the detector the length of the light path is changed instead of light speed. One light path is increased just as much the other one is decreased, therefore NO second order term. We get: L(1+v/c)/c-L(1-v/c)/c=2Lv/c^2 The common description: 4 times area times angular velocity is correct only mathematically, but is not physically motivated, since no light exists in the enclosed area. Without Einstein's theory Sagnac effect is easily explained. The effect is TRANSLATIONAL and can therefore (as Wang has stated) be generalized and valid for a straight line too. SRT is not proved wrong by this, but proved not necessary in this case. The linear interpretation can be united with Sagnac corrections in GPS when time stations on ground are compared. PS. Ian MacCausland has proved SRT wrong by logical reasons. See his NPA 2012 article called Reviewing the riddle of relativity. DS. Best regards_________________John-Erik Persson