Comment on How long would it take a black Hole to fully absorb a person from event horizon to center of the earth style?

• DomeGuy@lemmy.world ⁨1⁩ ⁨day⁩ ago

  Time dilation is your subjective acceleration veering into more “time” than “space”.

  If you somehow were in a flat universe with parallel velocity to an object several light-years away, and somehow managed to accelerate towards it at 1 g, you’d impact at the time on your watch that pure Newtonian physics says you would.

  The subjective clocks of the place you’re hitting would measure your travel time as a lot longer, however. But it wouldnt be infinite at all – a relatively small multiple of “several” years, in fact.

  (Before the relativistic impact recused both you and them to an energetic plasma, that is.)

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  • A_A@lemmy.world ⁨1⁩ ⁨day⁩ ago

    We have a physicist here ! Thanks to the universe 😁
    (i am more like a physics’ enthusiast who understood A. Einstein(s’) very old book on special (= 1st draft) relativity)

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    • DomeGuy@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Not a physicist – they know the math.

      Just a sci-fi enthusiast who got really annoyed by a trilogy that didn’t understand what the “delta” in “delta-v” meant and so the space ships spent a lot of time getting to a very high orbital speed before each fight.

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      • A_A@lemmy.world ⁨1⁩ ⁨day⁩ ago

        🚀👍😋

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• bufalo1973@piefed.social ⁨1⁩ ⁨day⁩ ago

  Maybe from the POV of the person falling.

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  • LillyPip@lemmy.ca ⁨1⁩ ⁨day⁩ ago

    So there are two correct but very different answers to this question, then, right? One for an outside observer and another from the perspective of the black hole?

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    • bufalo1973@piefed.social ⁨1⁩ ⁨day⁩ ago

      The extreme case is a photon crossing the universe. For an outside observer, it will take the photon billions of years to cross the universe. For the photon there is no time at all.

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