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Physical Review & Research International

Physical Review & Research International, ISSN: 2231-1815,Vol.: 3, Issue.: 3 (July-September)

Research Paper

Method for Constraining Light Speed Anisotropy by Using Fiber Optics Gyroscope Experiments


A. Sfarti1*

1UC Berkeley, CS Dept, 387 Soda Hall, Berkeley, CA 94720, USA.




The Mansouri-Sexl theory is a well known test theory of relativity. Mansouri and Sexl dealt with the theory of the Michelson-Morley, Kennedy-Thorndike and Ives-Stilwell experiments but left out the very interesting Sagnac experiment. In the following paper we will present a novel way of detecting anisotropy effects in (Lω)v / c2 via a reenactment of the Sagnac experiment using fiber optic gyroscopes (FOG) where L is the length of the fiber and ω is the angular speed of the FOG. We show how the fiber optics gyroscopes are used for constraining light speed anisotropy in the framework of the Mansouri-Sexl test theory. We also show an interesting amplification effect due to the use of the Mansouri-Sexl slow clock transport equations in conjunction with FOGs. Our paper is divided into four main sections: in the first one we give an overview of the Mansouri-Sexl test theory of special relativity, in the second one we give a historical perspective of the Sagnac experiment, in the third section we formulate the Mansouri-Sexl theory for the Sagnac experiment and we conclude with experimental setup and results.


Keywords :

Mansouri-sexl test theory; light speed anisotropy; fiber optic gyroscopes.


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