• lad@programming.dev
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      5 months ago

      Not sure what are those “both” ways, but yeah isotropic or especially anisotropic speed of light would be nice to know for sure

      • A_A@lemmy.world
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        5 months ago

        The speed of light being isotropic has been demonstrated already and I believe I know what they mean when they say “both ways” : since all demonstrations of the speed of light are based on “round way trip” from A to B then from B to A. But, no experiments can measure a one-way trip speed.

        • lad@programming.dev
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          5 months ago

          Then I was probably incorrect, what would be a correct term for isotropic but depends on direction? Because I also meant one-way speed

          • A_A@lemmy.world
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            5 months ago

            Hi lad,
            i was not certain so i double checked :
            https://en.m.wikipedia.org/wiki/Isotropy
            Physics - - Electromagnetics :

            An isotropic medium is one such that the permittivity, ε, and permeability, μ, of the medium are uniform in all directions of the medium, the simplest instance being free space.

            … if you read this like i do, they do not care to diferentiate “round trip” and “one way” … and my vocabulary is not good enough to find a word that would fit.