2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36222The experimental results of the two-photon absorption(TPA) and Mössbauer-rotor(MR) for testing the isotropy of the speed of light are explained in an ether drift model with a drift velocity of $\sim 10^{-3}c$. Further tests of the ether drift assumption are suggested.6 pages,2 postscript figuresGeneral Relativity and Quantum Cosmologytext