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Thread: Sea of Black Holes

  1. #1 Sea of Black Holes 
    Forum Freshman ScubaDiver's Avatar
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    My physics professor here at ucla yesterday was talking about how when one wants to analyze matter on an extremely small scale, space and time become "jumbled together" or indistinguishable from one another. (I think thats what he said) He said world seems to be composed of little lumps of space time.

    He was then talking about black holes and mentioning how they can collapse eventually into extremely small globs, of sub atomic size.

    Then, he finally said that one theory in modern physics is that black holes from the past have collapsed, and somehow formed neutrons, protons, and electrons.

    In other words, all of matter today may be composed of sub atomic black holes from the past.

    Now, I'm sure I have explained what he said horribly, but what theory is he talking about. Is there some theory in physics like this?


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  3. #2 Re: Sea of Black Holes 
    . DrRocket's Avatar
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    Quote Originally Posted by ScubaDiver
    My physics professor here at ucla yesterday was talking about how when one wants to analyze matter on an extremely small scale, space and time become "jumbled together" or indistinguishable from one another. (I think thats what he said) He said world seems to be composed of little lumps of space time.

    He was then talking about black holes and mentioning how they can collapse eventually into extremely small globs, of sub atomic size.

    Then, he finally said that one theory in modern physics is that black holes from the past have collapsed, and somehow formed neutrons, protons, and electrons.

    In other words, all of matter today may be composed of sub atomic black holes from the past.

    Now, I'm sure I have explained what he said horribly, but what theory is he talking about. Is there some theory in physics like this?
    What kind of a physics class are you taking ?

    This is pretty rank speculation.

    The best available theory of very small black holes is thay they evaporate in almost no time at all by the mechanism of Hawking radiation, Even that is pretty speculative.

    What you described sounds like science fiction, although you can probably find some physicist somewhere who has speculated on almost anything.

    Space and time are, as in general relativity, mixed together via the mechanism of curvature of spacetime. That is mainstream physics. It applies at very large dimensions and in extremely high gravitatinal fields (high curvature). The idea of this occurring at sub-atomic scales is often heard, sometimes called quantum foam, but is again rank speculation. It would be consistent with a picture that is populted by atomic-scale or smaller black holes, and again that is rank speculation.

    I hope this guy is clearly telling you the difference between understood mainstream physics and wild speculation in the name of research. Most of the wild ideas come to nothing.


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  4. #3  
    Forum Freshman ScubaDiver's Avatar
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    What kind of a physics class are you taking ?
    Oh, its just a mechanics class, he was just going off on a tangent after a review session.

    Space and time are, as in general relativity, mixed together via the mechanism of curvature of spacetime. That is mainstream physics. It applies at very large dimensions and in extremely high gravitatinal fields (high curvature). The idea of this occurring at sub-atomic scales is often heard, sometimes called quantum foam, but is again rank speculation. It would be consistent with a picture that is populted by atomic-scale or smaller black holes, and again that is rank speculation.
    He definitely didn't say that the theory was mainstream physics. Of course its not. It just sounded so totally bizarre that I had to bring it up, to see if there really are physicists who believe it may be true. And as you've said, it is definitely speculation and not based on evidence. It was just the wierdest thing I had heard in a good while.
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