Comment on Gonna be here a while

Asweet@piefed.ca ⁨3⁩ ⁨weeks⁩ ago

• MotoAsh@piefed.social ⁨3⁩ ⁨weeks⁩ ago

  It’s even funnier given that the universe is still too warm for black holes to start evaporating. Meaning, it will be billions upon billions of years before any Hawking radiation could exist in order to be observed.

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  • teft@piefed.social ⁨3⁩ ⁨weeks⁩ ago

    Since you seem to want to downvote me instead of go read an article to learn how wrong you are, here is the simple wikipedia page on hawking radiation:

    https://simple.wikipedia.org/wiki/Hawking_radiation

    Nothing about heat of the universe because that isn’t a factor in Hawking radiation. You can go read the full page if you like but that also doesn’t mention heat of the universe.

    Maybe don’t post so authoritatively on something you aren’t sure about. Spreading misinformation isn’t a good thing.

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    • MotoAsh@piefed.social ⁨3⁩ ⁨weeks⁩ ago

      They still don’t evaporate because of the heat of the universe.

      Maybe don’t be a dumbass quoting things you don’t underatand if you want to be listened to.

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  • birdwing@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    I mean, what if you cooled down an area sufficently enough, and created a black hole in there? Though that’d require impossible levels of unobtainium and hopium.

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  • teft@piefed.social ⁨3⁩ ⁨weeks⁩ ago

    That’s not how hawking radiation works. Basically some particle pairs will always form near the event horizon. Some halves of the pair fall inwards others escape the black hole. The escaping ones are lost mass for the black hole. This happens for all sized black holes at all times just that for small black holes it happens really quickly but bigger black holes it happens incredibly slowly.

    It will takes trillions of years to evaporate any stellar sized black hole but all black holes evaporate all the time.

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  • Klear@quokk.au ⁨3⁩ ⁨weeks⁩ ago

    Aren’t small black holes supposed to emit a shitton of it?

    There may be a process, natural or artificial, for creating these.

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    • MotoAsh@piefed.social ⁨3⁩ ⁨weeks⁩ ago

      Yea, the pressure increases as the black hole shrinks until tiny ones disappear in a massive explosion.

      I do not know how the forces change over scale, though. For all I know, it ‘could’ be that early small black holes could’ve evaporated, but the early universe was also a lot hotter than now, making that point where they ‘can’ evaporate a lot smaller, too.

      There is also the question of how homogenous the universe ‘actually’ is which throws a wrench into the maths as to whether it was possible. So even if the norm says no, there ‘might’ be a chance some less dense region saw a time where black holes could evaporate.

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