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Added by Iceviper on 16 Sep 2013 10:12
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White Holes

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A white hole, in general relativity, is a hypothetical region of spacetime which cannot be entered from the outside, but from which matter and light have the ability to escape. In this sense, it is the reverse of a black hole, which can be entered from the outside, but from which nothing, including light, has the ability to escape. White holes appear in the theory of eternal black holes. In addition to a black hole region in the future, such a solution of the Einstein field equations has a white hole region in its past.[1] However, this region does not exist for black holes that have formed through gravitational collapse, nor are there any known physical processes through which a white hole could be formed.
Like black holes, white holes have properties like mass, charge, and angular momentum. They attract matter like any other mass, but objects falling towards a white hole would never actually reach the white hole's event horizon (though in the case of the maximally extended Schwarzschild solution, discussed below, the white hole event horizon in the past becomes a black hole event horizon in the future, so any object falling towards it will eventually reach the black hole horizon).
In quantum mechanics, the black hole emits Hawking radiation and so can come to thermal equilibrium with a gas of radiation. Because a thermal-equilibrium state is time-reversal-invariant, Stephen Hawking argued that the time reverse of a black hole in thermal equilibrium is again a black hole in thermal equilibrium.[2] This implies that black holes and white holes are the same object[how?]. The Hawking radiation from an ordinary black hole is then identified with the white-hole emission. Hawking's semi-classical argument is reproduced in a quantum mechanical AdS/CFT treatment,[3] where a black hole in anti-de Sitter space is described by a thermal gas in a gauge theory, whose time reversal is the same as itself. Thank You Wikipedia

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Iceviper's Space Collection (6 lists)
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Published 5 years, 1 month ago 2 comments

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Posted: 5 years, 1 month ago at Sep 16 22:31
I touched upon White Holes in my Wormhole list so I thought I'd elaborate a bit more, or as much as can be elaborated on something that is only thought to exist but has never been observed or it's effects felt (to our limited knowledge). The first pictures give a rudimentary explanation of the White Hole and its supposed effects. The pictures are all, of course, artists representations. It is thought by some physicists that the original singularity that caused the "Big Bang" was a White Hole and quite possibly from another dimension thus transporting matter and energy from one plane of existence to another. It is further thought that the Black Holes that exist in our universe may very well be siphoning off matter and energy into yet another dimension. In a very simplistic manner, this can be expressed as a faucet (the White Hole) filling a sink (our dimension and plane of existence)while the drain (Black Holes) sucks it out to another place.
Again, all theory, no facts yet. But if you were to use your imagination....
Posted: 5 years, 1 month ago at Sep 17 1:23
Sounds logical. I wonder why it never has been observed. A white hole must be very bright. In our universe are so many black holes, why is there no white hole? Very interesting :-)
Posted: 5 years, 1 month ago at Sep 18 12:54
It is theorized that a white hole exists in only one place in our universe, at the very center. The thoughts are that matter and energy enter our universe and dimension through it and exit through black holes, which move matter and energy to countless other dimensions and universes. This would, if correct, follow that matter and energy can never be destroyed, only changed.

Again, only theories and conjecture at this time. :)
Posted: 4 years, 4 months ago at Jun 16 2:22
Very interesting! Great job.

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