black hole

Discussion in 'Physics & Math' started by black mask, Jul 21, 2016.

  1. black mask Registered Member

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    • If you don't know something, please ask questions rather than making statements as if they are fact.
    If we r to find out whether black hole is worm hole or high density of mass then,it can be figured out by bending of light or by its gravitional field.
    If light is absorbed in only one direction like water being absorbed in sink then it is a worm hole.
    But if its gravitational field is like that of earth. I.e. field direction from north to south then it is a mass.
    Please do care to discuss
     
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  3. origin Heading towards oblivion Valued Senior Member

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    That doesn't seem to make sense.
     
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  5. DaveC426913 Valued Senior Member

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    Couple of grave problems there.
    We cannot detect anything within a black hole.
    A non-rotating BH is a sphere. Gravity acts symmetrically.
    Earth's gravitational field is not north-south aligned. There is no such thing as an aligned gravitational field. Perhaps you are thinking of its magnetic field?
     
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  7. Ultron Registered Senior Member

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    Wormhole is very speculative interpretation of General relativity and there is a good chance that wormholes dont exist at all.
     
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  8. Layman Totally Internally Reflected Valued Senior Member

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    A black hole and a wormhole could have the same gravitational affects on its surroundings. It is the gravitational field in the center that separates them, one from another. Light wouldn't be pulled into a wormhole in such a way, because it would have to have a higher gravitational attraction in the center than a black hole in order to do so. Then it wouldn't be a wormhole anymore. So basically, light isn't going to be more heavily attracted to the center. It is not going to suck in light more than a black hole. Plus, a large magnetic field would make it possible for it to be a wormhole. It would actually take trying to figure its spin and if it has a larger magnetic field than normal to determine if it is a wormhole.
     
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  9. paddoboy Valued Senior Member

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    We are unable to observe anything beyond a BH EH.
    We do though know according to GR that total collapse should follow, once the Schwarzchild radius [EH] is reached, at least up to the quantum/Planck level.
    Here GR has no applicability and any possible knowledge of a wormhole would need at least a QGT [quantum gravity theory]
     
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  10. Layman Totally Internally Reflected Valued Senior Member

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    It is only very speculative to people that speculate about space not actually having curvature. Light has no mass, so the effect of gravitational lensing proves that it has curvature!
     
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  11. Layman Totally Internally Reflected Valued Senior Member

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    A wormhole would have a naked singularity, so it would allow someone to see it. A wormhole doesn't have an event horizon.
     
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  12. paddoboy Valued Senior Member

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    I'm speaking of the speculative scenario of inside a BH, at the quantum level, where possibly a ERB and wormhole may exist, if as most physicists believe, the mathematical point singularity does not exist.
     
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  13. black mask Registered Member

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    Thanks everone
     
  14. Layman Totally Internally Reflected Valued Senior Member

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    I think saying that something is a wormhole implies that it has a naked singularity or open singularity (two phrases meaning the same thing), but if you didn't want to imply that there was an open singularity, you should just say that it is an ERB (which would just imply the tunnel itself, since the paper didn't predict open singularities that would allow travel through it). Then the notion of a wormhole, in science fiction, always allows for travel, which would require an open singularity. An ERB is predicted by general relativity, but a classic ERB doesn't allow for travel through it because of the forces of gravity. General Relativity just can't predict other properties of the black hole at the singularity, which is why they are trying to use quantum mechanics to do that now.
     
  15. paddoboy Valued Senior Member

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    All highly speculative actually.
    The best that any wormhole connection to a singularity would be a ring singularity. And also GR says nothing about any singularity other than that which can be gauged by the properties outside the BH's EH. eg: an Ergosphere denotes a spinning BH and a ring singularity.
    The ERB of course is just another name for a wormhole, which is a prediction of GR, although as yet never evidenced.
     

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