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Thread: Confused about black holes?

  1. #1 Confused about black holes? 
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    Interactions of the fundamental forces involve "information"
    i.e. information cannot propagate over immense globs of matter in outer space
    meaning the matter will not concentrate as a whole from gravity

    If black holes work by the power of gravity
    Why does gravitation overcome the speed of light if gravitation and light travel at the same rate?

    Also, if black holes possibly "destroy information"
    Wouldn't that cause the information in the gravitational force to destroy itself?


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  3. #2  
    Forum Ph.D.
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    Someone else may be better qualified to answer this but I think there is a problem with your concept of "information". Also my understanding is that gravity does not so much "propagate " as change the nature of space, bending it. So there is a problem applying the concept of speed to gravity. Since we can't turn gravity on or off it would be difficult to measure its speed.

    The idea is that the effect of a super massive thing is to bend space back on itself. The speed of light is not changed but the path of the light is now a closed circle.

    There is no information in gravitational force just destortion of the fabric of space time. "Information' is an inappropriate concept in this context. Gravity does not tell space to bend, it just bends it.


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  4. #3  
    Time Lord
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    Quote Originally Posted by Excidium View Post

    If black holes work by the power of gravity
    Why does gravitation overcome the speed of light if gravitation and light travel at the same rate?
    Gravity waves travel at that speed, but a gravitational field is a static thing. Also there's no certainty as to whether gravity affects gravity, but maybe...




    Also, if black holes possibly "destroy information"
    Wouldn't that cause the information in the gravitational force to destroy itself?
    It's more a matter that since information can't escape, it's lost to the rest of the universe. Presumably it still exists inside the black hole, where we'll never see it.
    Some clocks are only right twice a day, but they are still right when they are right.
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