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Eheran @lemmy.world
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TIL that A lightning bolt is five times hotter than the surface of the Sun. The charge carried by a bolt of lightning is so intense that it has a temperature of 30,000°C (54,000°F).
  • The charges do not have a temperature. It is the their smashing into air that causes the air to heat up. You could heat air up waaaaayyyy higher with electricity, many orders of magnitude hotter. At least onto the 100 millions of Kelvin. My understanding of physics stops somewhere around that point, but I do not see a reason why that should be the limit.

    As a side note, the less you have of something, the more irrelevant temperature becomes. You get hit by atoms, electrons, nuclei and other particles that have temperatures well into the billions(!) of degrees/Kelvin.

  • Radioactivity
  • "after a long time" - that is exactly my point. Where do you draw the line? It will never be non-radioactive, which the headline suggest would be the case in 1'500 years. As far as we know, everything might decay after some time. It will always have some Radon get trapped in it. Scatter some cosmic rays. Blablabla.

  • Are there any guides to living?
  • You do not bother asking people 100 questions about mundane things, let alone questioning their answers (by asking if that is really true multiple times etc.). They would simply ignore you at some point, unless perhaps you are their child, but that is obviously a very different topic to OP.

  • Terry Pratchett: Why does Dodger scratch "Kaspar" in the carriage?

    In "Dodger" by Terry Pratchett: Why does Dodger scratch "Kaspar" in the carriage of the embassy before setting everything on fire? There is no character I know with that name and if he just randomly picks a German(?) name, why should it remind anyone of him then?

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