Abstract

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.