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Thread: There's no way to Measure the Speed of Light in a Single Direction

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    There's no way to Measure the Speed of Light in a Single Direction

    A new study shows that not even cosmology can verify Einstein's assumption about the speed of light.
    The post There's no way to Measure the Speed of Light in a Single Direction appeared first on Universe Today.


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    Quote Originally Posted by Fraser View Post
    A new study shows that not even cosmology can verify Einstein's assumption about the speed of light.
    The post There's no way to Measure the Speed of Light in a Single Direction appeared first on Universe Today.


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    That is quite big news! In conjunction with the news that dark matter is under threat from that other recent study of galaxy destiny affecting star velocity within galaxies. If c can have different values , possible dependent on local gravity, then cosmology is getting ready for revision.
    sicut vis videre esto
    When we realize that patterns don't exist in the universe, they are a template that we hold to the universe to make sense of it, it all makes a lot more sense.
    Originally Posted by Ken G

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    Quote Originally Posted by profloater View Post
    That is quite big news! In conjunction with the news that dark matter is under threat from that other recent study of galaxy destiny affecting star velocity within galaxies. If c can have different values , possible dependent on local gravity, then cosmology is getting ready for revision.
    The issues with measuring the one-way speed of light are about as old as the Theory of Relativity itself. This is just ruling out another possible workaround. It has nothing to do with variable speed of light.

    And the MOND people start talking about threats to dark matter every time they find something their model fits. The problem is the many, many things that dark matter fits well which MOND theories do not.

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    Quote Originally Posted by cjameshuff View Post
    The issues with measuring the one-way speed of light are about as old as the Theory of Relativity itself. This is just ruling out another possible workaround. It has nothing to do with variable speed of light.

    And the MOND people start talking about threats to dark matter every time they find something their model fits. The problem is the many, many things that dark matter fits well which MOND theories do not.
    Yes that is known but light does bend, gravitaional lensing, if it bends its velocity vector changes. It might either retain its speed or pick up an orthoganal vector. That is hard to test.
    sicut vis videre esto
    When we realize that patterns don't exist in the universe, they are a template that we hold to the universe to make sense of it, it all makes a lot more sense.
    Originally Posted by Ken G

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    Quote Originally Posted by profloater View Post
    Yes that is known but light does bend, gravitaional lensing, if it bends its velocity vector changes. It might either retain its speed or pick up an orthoganal vector. That is hard to test.
    It's fairly easy to test and has been tested many times. It would also affect the light the same way in both directions.

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