Is ether a krazy concept, or is it suppressed science? Let us be open minded!
"...An experiment was performed in 1914 by Sagnac in which a light beam was split into two parts. One part moved along a path which was square in shape. The other part moved along the same path but in the opposite direction. The apparatus was set spinning so that, if there were an ether, the two parts of the beam would move at two different velocities. The interfering parts at the termination point would disclose the existence of the ether. And, in fact, that is exactly what happened. Furthermore, there was no strangeness in the magnitude of relative ether velocity. All was as it should have been. Other similar experiments followed which also proved the existence of the ether. There were no discrepancies between theory and results as had been the case with the Michelson-Morley type of experiment.
Unfortunately, relativity by this time was considered to be correct and many reputations (and egos) could be damaged by the disclosure of the existence of an ether. So the Sagnac experiment was suppressed as were all similar subsequent experiments. Einstein ignored Sagnac and his work.
Today, the same kinds of reputations and egos might be damaged, so physicists in general continue to ignore Sagnac. However, engineers use the "Sagnac effect" when they design their navigation systems for transoceanic aircraft, nuclear submarines, and communications satellites. Without this "effect" the navigation systems could not work properly. For more details, see two articles in Volume 7, Issue 39, of Infinite Energy Magazine, one by A. G. Kelly, and the other by the Correas."
by Lew Paxton Price and Herbert Martin Gibson
Here are two papers written by Georges Sagnac:
http://zelmanov.ptep-online.com/papers/zj-2008-07.pdf and
http://zelmanov.ptep-online.com/papers/zj-2008-08.pdf