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Originally posted by Unkaspam
Thanks Ambitwistor. I'm getting some of this now! If a black hole really is a "hole" then its evaporation would be more like filling in the hole rather than having the hole "evaporate".
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I'd rather just say that the horizon and mass of the hole shrinks, than say that the hole is "filled in".
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Or is it that when the highly compressed state of matter becomes a singularity, it presents a hole in the theory of general relativity[;)] or can the mass of singularity still be viewed as a condensed "mass" in relation to other masses such as planets?
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It's not possible to define the mass of the singularity, but the black hole itself has a mass. And yes, a singularity is a "hole" in general relativity; GR fails to make predictions about singularities.
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One more question, does Hawking radiation have a mass?
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It has mass-energy, like any radiation. If you enclosed some of it in a box, the box would have mass.