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Laws of physics and blackhole

  1. Apr 13, 2008 #1
    are all laws of physics break only at singularity Or laws of physics break even after event horizon?what is the difference
  2. jcsd
  3. Apr 13, 2008 #2


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    The singularity is the point (and it is important to understand that it is a mathematical point -- it has no dimensions) at which density becomes infinite. Clearly, shoving anything into zero volume will produce an infinite density. This is where modern physics begin to have a problem.

    The event horizon, on the other hand, is a fictitious radius around the black hole at which not even light would be able to escape in any fashion. This represents a "point of no return" because, as nothing can travel faster than light, nothing can escape the fate of falling into the black hole beyond this radius.
  4. Apr 14, 2008 #3
    Is quantum mechanics valid beyond event horizon?
  5. Apr 14, 2008 #4


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    Yes, so is general relativity.
  6. Apr 16, 2008 #5
    In respect of Kerr black holes, I'm assuming the frame-dragging effect would also carry on beyond the event horizon towards the singularity. I would normally assume this was the case though I've seen some images of light paths that show the light/frames entering the black hole perpendicular to the event horizon regardless of the extremity of the frame-dragging.

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