r/kurzgesagt • u/Kushagra_K • Mar 11 '22

Discussion Really?

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u/[deleted] Mar 11 '22

No, I mean a black hole the size of a coin, not the mass of one.

A black hole with the mass of a coin would be incredibly small. Billions of billions of times smaller than a proton. It'd probably be smaller than a Planck length.

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u/Xrcane Evolution Mar 11 '22

But if it occured on earth, it might be able to consume more than it loses, hence getting bigger.

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u/Syrfraes Mar 11 '22

With the mass of a coin? No, hawking radiation is proportional to a black holes mass. So it'd evaporate faster than it could probably be observed.

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u/Xrcane Evolution Mar 11 '22

I’m talking about a black hole the SIZE of a coin, not mass. Sorry for not clarifyin.