

Iyer, Chandru and Prabhu, G. M. (2008) The OneWay Speed of Light: A Simple Formulation. Technical Report 0809, Computer Science, Iowa State University.
Abstract
The MichelsonMorley experiment determined that the roundtrip speed of light in any inertial frame is a constant and is equal to the universal constant c in all inertial fames. Normally a synchronization convention is chosen, as proposed by Einstein, which forces the oneway speed of light to be c in all directions in all inertial frames. We propose a unique formulation for the oneway speed of light in threedimensional Euclidean space that is consistent with the MichelsonMorley experiment as well as the IST transformation, which is the Lorentz transformation without the resynchronization component. This formulation of a variable oneway speed of light is the only possible prescription that will satisfy the requirement that a synchronization shift along the line of relative motion between the chosen inertial frame and the rest frame will render the oneway speed of light to be a constant. Furthermore, this formulation satisfies the requirement that the harmonic mean of the onward and return speeds along any given line is c and the average speed along any closed path is also equal to c.
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