This is interesting and counterintuitive — because of how the energy proportions itself (e.g. visible vs. infrared), kiloton-range nuclear weapons are brighter than megaton-range weapons, apparently.pic.twitter.com/AgRnRpBY8Y
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I did find this interesting article from Nature, 1962, on the brightness of nuclear weapons — has some nice illustrations:pic.twitter.com/3E9BlUfBzV
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It has this graph which seems wrong to me — it assumes that the amount of visible energy is directly proportional to the yield, but that's not right. Article ends with a nice bit about whether aliens in nearby star systems could see nukes going off on Earth (probably not).pic.twitter.com/vnZUAramyr
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Poked around a bit and found these interesting diagrams (which are related to flash blindedness) which seem to indicate that indeed, lower-yield nuclear weapons are indeed brighter than higher-yield ones. Again, kind of an interesting and unintuitive fact.pic.twitter.com/EOBQ5n8xtL
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Naively I would think higher energy density would correspond to higher temperature which should produce bluer emissions.
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How about from the Moon?
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With modern telescopes and instruments, we can see something as faint as 28 magnitude but we still can't detect a change in brightness of about 1 part in ~250 billion.
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Clarke used that argument in that math trilogy/the grand galatics.
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A 10 megaton blast could be a incoming object into the atmosphere. Isn't that something which orbiting detectors have to filter out?
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