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If energy/matter deforms spacetime in three dimensions

  1. Oct 23, 2011 #1
    If energy/matter deforms spacetime in three dimensions....

    Then why do we get galaxies in (relatively) flat discs and black holes that emit radiation in a single plane?
     
  2. jcsd
  3. Oct 23, 2011 #2

    atyy

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    Re: If energy/matter deforms spacetime in three dimensions....

    Well, electric charge acts in 3D, but we can still get 2D materials like graphene.
     
  4. Oct 24, 2011 #3
    Re: If energy/matter deforms spacetime in three dimensions....

    You have assumed gravity is the unique and direct cause of such phenomena..it isn't .

    Spiral galaxy formation:
    http://en.wikipedia.org/wiki/Spiral_galaxies#Origin_of_the_spiral_structure

    Kip Thorne: BLACK HOLES AND TIME WARPS:

    black hole radiation: a spinning black hole behaves like a gyroscope...near the hole the disk
    remains in the black hole equatorial plane. gas accreting into the hole from its disk makes the hole spin faster and anchors the disk.

    Maybe a crude analogy is the equatorial bulge of the earth.....if gravity is symmetrical around a sphere of approximate unuiform mass density, why should such a mass "bulge"..
    because of the spin of earth about its axis.
     
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