Comments by "Winston Smith" (@kryts27) on "A "metaphysically terrifying” look inside black holes | Janna Levin" video.

  1. Planck Length
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  2. Your wife 😅
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  3. If you, a collection of atoms fall into a black hole, then only your mass (and charge) is preserved and is added to the mass (and charge) of the black hole. Every other bit of information about the physical you gets destroyed, even the quantum information of every atom in your body gets destroyed. This is not the case from natural death on Earth; your proteins slowly break down into simpler molecular components, but all your atoms are essentially immortal (well, proton decay is undecillion of years into the future). Since any human being has no-where the mass of a planet, let alone a star, then the black hole's radius remains unchanged, but if something like the mass of our sun enters a black hole (if the gas of our star didn't slowly get sucked into the accretion disk around the black hole), the sun would be destroyed and the radius of the black hole would increase. When black holes of the same mass merger, then you get a larger black hole but the radius is at least double that of any two of the original black hole. Go figure.
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  4. Nearly, but not quite true, There is Hawking radiation.😊
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  5. If a stellar-sized black hole had an accretion disk (e.g. companion to Cygnus-X1) then you would never get within a million miles of the event horizon; you would be killed by the intense radiation generated by the accretion disk or jets spewing out from the poles of the black hole. This would be at least two orders of magnitude distance for a Supermassive black hole, such as the one called Sagittarius A* (in the centre of the Milky Way galaxy) for the similar radiation killing effect. So it's purely hypothetical about approaching and entering a black hole. You would never survive even getting that close.
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