Comments by "Dr Gamma D" (@DrDeuteron) on "Kurzgesagt – In a Nutshell" channel.

  1. in a spinning blackhole, the singularity becomes a ring (ringularity). At max spin, it's radius approaches the Schwarzshield [sic] radius, so it's sitting right there behind the event horizon at the equator. Weird.
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  2. You should a asked how the immune system works.
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  3. Genesis and Numbers disagree.
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  4. we are Sparta
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  5. a gamma ray burst from the sun has the entire volume of earth the same energy density as a maximally compressed nuclear device...so megatons per cubic inch. plus or minus.
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  6. ah yes, the CNN pheromone
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  7. If these are the progenitors of quasars, then we use the for deep space navigation, via delta-DOR.
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  8. they're 10x as energetic as a supernova, so multiply all distances by sqrt(10). Apparently they have jets, so if you're in the jet...add more safe space.
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  9. Boltzmann was way ahead of his time. Hi kinetic theory, before we knew what molecules were...including the identical particles permutation correction from quantum mechanics, before quantum mechanics and indistinguishable particle were. Sick!
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  10. Note that dark energy is not energy. If it were, E=mc^2 says it would act like mass, which is what matter does. It may be the worst named thing in physics, and that’s saying a lot.
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  11. there is no conscious life. Just a BB, that thinks there's conscious life.
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  12. nothing is really spinning. It's just weirdly shaped spacetime.
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  13.  @PapyrusEngineer nukes are the ⛽️ in this metaphor. Matches are policy.
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  14.  @artdeco4629  the sun gives us low entropy photons at 5772K, and we reradiate that energy in high entropy photons at 257K…irrc. That’s how we make order on earth, with a little geothermal contribution too.
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  15. wrong altitude
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  16.  @TonyP9279  in weak fields, like earth, the fact time runs one part in a quadrillion slower per meter leads directly to g = 9.8 m/s/s. The spatial curvature is much too small to notice until you get to a solar mass (Shapiro delay, which is 200 microseconds for a radar round trip to Venus on the other side of the sun…half is time dilation, half is stretched space)
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  17. What happens when the big rip tears protons and neutrons apart? That going to create new matter and antimatter with incredible mass density.
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  18. Andromeda paradox
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  19. what happens when the red giant sun engulfs Earth? Heat is not a problem: most of Earth is hotter than then the outer layers of a RG, and they're pretty thin: what's the drag? How long for the orbit to crash? How long until the stellar heat boils the core?
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  20. what are the odds?
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  21. We're more likely to Aeroform Earth than we are to Terraform Mars.
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  22. You forgot that mars is pear shaped. The northern hemisphere is low and flat (which is why we send spacecraft there), the south is high and rugged. No need to "laser dig" oceans.
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  23. In a classical blackhole, the singularity is not really an infinite density full of the matter that falls is, rather it's a topological glitch in spacetime: it's not part of the universe. The matter (which are fields) that go there are just gone (even though their charge remains). The topological glitch contains all the non-zero curvature, and the surrounding curvature gets that back to asymptotic spacetime...requiring a surround blackhole, which has zero Einstein curvature...though it is definitely not flat. tl dr: blackholes are made from spacetime, not stuff.
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  24.  @user-vw4xp5nt9f  repunits and Demlo numbers.
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  25. TB is not extinct in the US. We have it in SoCal, in an alpha city even.
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  26. not really, I mean if you're on tik tok all day, maybe you don't know about them. Other than a yt commenter (whom I imagined) says they exist?
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  27.  @theflamingphoenix5363  no, it's a good question. Would equal mass white and black holes cancel, or pass through each other? Idk, I'm not that good at solving Einstein's field eq. I'm sure someone who is has published on it, though.
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  28. As someone who is no longer in the target demo, I can tell you ladders, height, roofs are way more dangerous than perceived. Balance fades with age. Same with water. I wear a lifejacket all the time now, and I’ve surfed north shore, sea kayaked camped BC, rafted the Rockies, raced sailboats….idk, way more dangerous than I perceived at the time.
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  29. nah, this is what ppl like Kip Thorne worry about.
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  30. black holes are not complicated. They only have 3 parameters: mass, charge, spin. That's it. Doesn't make them easy to understand, though
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  31. Not that’s ridiculous, rather: not me. I got a shot at skin cancer . We’ll see.
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