A note on light velocity anisotropy

TL;DR

This paper argues that current experiments near Earth cannot detect anisotropy in the one-way speed of light, but they serve as important tests for special relativity and the equivalence principle.

Contribution

It demonstrates that experimental results so far do not show light velocity anisotropy and emphasizes their significance in testing fundamental physics principles.

Findings

No detectable anisotropy in light speed near Earth

Experiments support special relativity

Experiments validate the equivalence principle

Abstract

It is proved that in experiments on or near the Earth, no anisotropy in the one-way velocity of light may be detected. The very accurate experiments which have been performed to detect such an effect are to be considered significant tests of both special relativity and the equivalence principle