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Thread: Grav redshift/blueshift?

  1. #1
    Join Date
    Dec 2011
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    Point Clear, Essex,UK
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    Grav redshift/blueshift?

    General relativity double-check. (Got a bit confused by too much time in alt universe)

    3 comoving physical observers A, B & C
    A & B are on the surface of identical dense gravitational objects (neutron stars or alike)
    C is in space halfway between.

    Compared to Newtonian version of events

    C sees A & B redshifted, time dilated and magnified?
    A & B see each other as unaffected?
    A & B see C as blue-shifted, time dilated faster, and de-magnified???
    See: 'The God Kit' -- 'The Brigadier And The Pit' -- Carl N Graham -- Sci-fi blog: The Alien Reporter

  2. #2
    Join Date
    Oct 2005
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    26,925
    Sounds right to me, though "time dilated faster" is kind of an oxymoron (we know what you mean).

  3. #3
    Join Date
    Dec 2011
    Location
    Point Clear, Essex,UK
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    473
    Thanks
    Is Reverse Time Dilation better?
    See: 'The God Kit' -- 'The Brigadier And The Pit' -- Carl N Graham -- Sci-fi blog: The Alien Reporter

  4. #4
    Join Date
    Oct 2005
    Posts
    26,925
    Time compression perhaps? There really isn't a good word because in special relativity, everyone things everyone else's time is dilated. Better might be just to say that time can be regarded as ticking faster over there as compared to here if "here" is deep in a gravitational well.

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