Light speed tests in one direction are claimed, but most miss a length contraction or a time dilation somewhere. This is important to quantum mechanics, quantum loop theory, and all the theories of everything.
At least one Model shows time dilation and length contraction as properties of matter, which agrees with Michelson -Morley (length contraction suffices), Kennedy-Thorndike (needs length contraction and time dilation) and Ives-Stillwell (time dilation only with transverse doppler effect). The Model passes the Mossbauer rotation (time dilation) tests, claimed Mossbauer type anisotropic tests (which fail to account for time dilation affecting both emitter and receiver), and Cole Very Long Baseline Interferometry (contraction in the baseline and the angle of the celestial body account for claimed anisotropy). Zhang suggests any tests will be indistinguishable from SR anyway. Does that mean that time dilation and length contraction are sufficient in a theory to be indistinguishable from Special Relativity? Thanks to Tom Roberts for the list of tests (http://www.edu-observatory.org/physics-faq/Relativity/SR/experiments.html and elsewhere)
The “One-way speed of light” Wikipedia article claims NO one way tests have been done, that all merely appear to be one way tests, mentioning 2009 Greaves, Rodriguez and Ruiz-Camacho AmJP, 1990 JPL maser/fiber optic measurements analyzed by Will and Zhang, and Romer's early measurement analyzed 1997 by Zhang. Special Relativity postulates that the one way speed matches the two way speed, but the 1904 Lorentz/Poincare Ether Theory and 1963 Edwards Theory of anisotropic space AMJP, while out of fashion, are considered experimentally indistinguishable.
The Cosmic Microwave Background anisotropy and the ongoing long-term AGASA experiment measuring proton/cosmic ray energies against the maximum expected by the GKZ theory may someday support the anisotropy of light speed, but are certainly not yet strong enough.
A large portion of the physics community seems to be comfortable with “experimentally indistinguishable,” which the mnp Model can survive.
From that portion of the physics community still looking for proof of the one-way speed of light in support of Special Relativity, the author is seeking suggestions. Experiments that are current gold standards in different related areas and studies that explain their methodology are especially prized.
A universal reference frame, even if only local to the galaxy or galactic cluster, would make life easier for many theories and theorists, not just yours truly. The author suggests that ANY theory or Model attempting to explain mechanism will need to see the one-way speed of light as varying in the local reference frame.
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