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Michio Kaku and Einstein

  1. Jan 22, 2013 #1
    I watched a video of Michio Kaku saying that according the Einstein's equations of black holes, physics literally breaks down into nothing. I just wanted to ask how accurate the things he says are.

    For example he states that the mass of the blackhole being M and R describes the distance from the blackhole, but when R is equal to 0. You simply get infinity.

    So he states that the very centre of a blackhole, according to Einstein's equations gravity would be infinite and time itself completely stops. Also he says that all the mass of a blackhole, is contained within an infinitely small, infinitely dense point that takes up exactly 0 space at all.

    So if this is true, could we argue that the matter simple dissapears? As in literally no longer exists?

    Maybe blackholes are "gods" way of cleaning up the universe, getting rid of things he no longer likes the look of :D
     
  2. jcsd
  3. Jan 22, 2013 #2
    Getting "infinity" means that the model breaks down; it is no longer valid. It's best not to try to attach physical significance to every quirk of the equations.

    Be aware that Kaku is, shall we say, eccentric. Which is to say that he frequently finds himself peddling pseudoscience.
     
  4. Jan 22, 2013 #3
    What is the quantum mechanical reason that would keep physical matter from contracting to infinity or near infinity in the presence of immense gravity? Classical matter can't contract anywhere near such proportions but where can i find such classical matter made of classical particles?


    He's taking a small bet and imo he knows what he stakes. He's bold and AFAIK Einstein has been his role model and he'd rather be in the innovators camp than in the 'don't know camp'. It's speculation both ways - that there could be an extremely dense classical-like core at the center of a black-hole or 'size' that converges to infinity.


    Why is this more bothersome than space(time) contracting in the presence of large mass?
     
    Last edited: Jan 22, 2013
  5. Jan 23, 2013 #4
    When the theory breaks down, it means the theory is wrong. It doesn't mean that the universe breaks down.
     
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