Sagnac Experiment

The Sagnac Experiment was first conducted by French physicist Georges Sagnac in 1913. The experiment is essentially the same experiment as the Michelson-Morley Experiment, except that it is on a horizontal rotating turn-table. The results of the Sagnac Experiment show that when the table is rotated around on a horizontal axis during the experiment, the velocity of light indeed changes. This contradicts the Michelson-Morley Experiment that was designed to use the supposed movement of the earth to change position, and which showed no change in light velocity.

From a paper on the Sagnac Effect we read:

A Critical Analysis
In Theory of Relativity: A Critical Analysis (Archive) its author Dr. Roberto Monti (bio) describes in the abstract:

On the subject of the Sagnac Effect, Dr. Monti states:

Malcom Bowden
The geocentrist Malcom Bowden describes the Sagnac Experiment in the following video:

Video Description:

The video author's personal views on geocentricity aside, Mr. Bowden provides an accurate description of the Sagnac Experiment and its results.

General Relativity Framework
On the assertion that the Sagnac Effect is explained under the framework of General Relativity theory, Professor Ramzi Suleiman of the University of Haifa writes the following:

The Sagnac Effect Falsifies Special Relativity Theory (Archive)

Wang Experiment
It has been claimed that Special Relativity does not apply to the Sagnac Effect because it involves rotational acceleration. In 2004, Dr. Ruyong Wang demonstrated that a non-accelerating observer can also measure a difference in lightspeed, falsifying Special Relativity's explanation of the Michelson-Morley Experiment.


 * 2004 Wang. Generalized Sagnac Effect (pdf)

Dr. Robert Bennett writes:

From Challenging Modern Physics: Questioning Einstein's Relativity Theories by Al Kelly (bio) we find:

In the book Unified Field Mechanics II we find a paper by Physicist José R. Croca, Ph.D. (bio) where we see:

Addendum
As parting words, the Dr. Croca states:

Defeated, Dr. Croca seems to hint that relativity might operate differently at different scales. He suggests that Special Relativity explains why light is consistent in experiments of the Earth going around the Sun (Michelson-Morley Experiment) and with the direction of Starlight (Airy's Failure), but is not applicable in other experiments such as Sagnac and Wang devices which have observed an inconsistency of c for different observing points, including light traveling faster than c.

One may remark that it is quite odd and remarkable that Special Relativity is so special as to be violated with multiple experiments, and is only applicable to certain situations involving the motion of the earth as a heliocentric explanation for why the Earth seems to be horizontally motionless in experiment.