On the Experimental Determination of The One-Way Speed of Light

Abstract

Rodrigo de Abreu

In this paper it is considered the physical meaning of the one-way speed of light. Usually in the standard Special Relativity what is considered is the Einstein one-way speed of light that has been introduced by Einstein in the 1905 article by definition. In the standard interpretation the one-way speed of light it is not considered since the Einstein speed of light is considered to be the speed of light. However, in our previous work we have shown that this is a terminological confusion. Now we explain why this is so with a very simple example using two methods of synchronization, with rods and with light signalling, that shows the physical meaning of absolute simultaneity and also the physical meaning of Einstein simultaneity in connection with the two concepts “speed of light”. As a result of this analysis an experimental method for the determination of the one-way speed of light emerge.

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