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Thread: Question re: black holes for DA and other knowledgeable people

  1. #11
    Black holes are intangible, correct?


  2. #12
    Quote Originally Posted by Le Type Français View Post
    Black holes are intangible, correct?
    *shrug*
    ...it's worse than we thought. it turns out the people at the white house are not secret muslims, they're nerds.

  3. #13
    Quote Originally Posted by Steven Edwards
    I don't think we have a clear enough picture of singularities to say.
    That's why I phrased it as a question. ;-)

    Quote Originally Posted by Steven Edwards
    But, not all black holes contain singularities.
    I interpreted that article as saying that all black holes *do* contain singularities, but the shape that the singularity takes is different in non-rotating black holes (where it's a point) and rotating black holes (where it's "smeared out to form a ring shape").

    Here's some concepts from that Wiki piece on singularities that make my brain want to explode:

    Singularities of whatever shape have zero volume but contain all of the mass of the black hole.

    It's impossible to avoid a single-point singularity, and any attempt to do so will only get you to it faster than if you didn't try to avoid it. (Cosmic quicksand?)

    Great thread that I'm enjoying very much even as it makes me feel completely stupid!
    It is easier to find men who will volunteer to die, than to find those who are willing to endure pain with patience.

    ~Julius Caesar


  4. #14
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    Quote Originally Posted by Steven Edwards View Post
    Tom's link to the Hubble site said black holes follow the laws of gravity.
    I think the mass which surrounds the black holes are following the laws of gravity.

  5. #15
    Quote Originally Posted by thehipcrip View Post
    I interpreted that article as saying that all black holes *do* contain singularities, but the shape that the singularity takes is different in non-rotating black holes (where it's a point) and rotating black holes (where it's "smeared out to form a ring shape").
    My interpretation: a point is one-dimensional, a ring shape necessitates multiple dimensions. (Plus, the last sentence: "It is generally expected that a theory of quantum gravity will feature black holes without singularities.")

    Great thread that I'm enjoying very much even as it makes me feel completely stupid!
    It's showing me that taking some OCW courses could be fun.

    Quote Originally Posted by NorthQuad View Post
    I think the mass which surrounds the black holes are following the laws of gravity.
    Possibly so. I'm not qualified to say.
    ...it's worse than we thought. it turns out the people at the white house are not secret muslims, they're nerds.

  6. #16
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    Quote Originally Posted by Steven Edwards View Post
    Possibly so. I'm not qualified to say.
    Yeah, actually, I know too little about black holes to be making any type of guess as to what they are or how they function. I just wanted in on a fun conversation.
    Last edited by NorthQuad; 05-03-2010 at 07:03 PM. Reason: just nevermind

  7. #17
    Senior Member mr_coffee's Avatar
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    Black holes are silly. Always noming away at whatever comes near them.
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