Why must black hole have entropy?
polynnxu
Answered question
2022-08-11
Answer & Explanation
Royce Golden
Beginner2022-08-12Added 12 answers
Hawking radiation may shrink a black hole, but the radiation has entropy of its own, so S still isn't reduced. Indeed, if you throw something into a black hole, then wait for Hawking radiation emission to reduce the black hole's mass to its original value, the law predicts the outgoing radiation will have at least as much entropy as the object you destroyed.
So what the law really tells us is blackbody radiation has an especially high entropy for a given mass-energy.
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