User talk:71.208.41.57

one-way speed of light is isotropic.
That one-way speed of light is isotropic relative to a unique frame of reference, not relative to every frame of reference, see http://physicsfixes.elementfx.com/index30.html

There is also a way to measure one-way speed of light that does not require clock synchronization, see http://physicsfixes.elementfx.com/index20.html

The first is on viXra,

https://vixra.org/author/david_bryan_wallace

the second on academia.edu

https://www.academia.edu/13004395/A_Revealing_Test_of_the_Compatibility_of_Special_Relativity_Postulates

I am not permitted to mention these in the wikipedia article on one-way light speed because I am the author and authors are not allowed to promote their own work on wikipedia.

I hope this is helpful.

David Bryan Wallace retired math instructor Cape Coral, Florida, USADavidBryanWallace (talk) 19:12, 26 September 2020 (UTC)