Comments by "Dr Gamma D" (@DrDeuteron) on "" video.

  1. The initial fireball is a diffusion of blackbody radiation in the form of X-rays. The surrounding bomb material makes that aspherical. Even in large devices, with huge spherical fireballs---the smooth plasma ones, pre shockwave--you can see the shadows of various parts. Eventually the diffusion slows down (it's a random walk) and is overtaken by the long lasting shockwave wrapped turbulent fireball. (3:30) 6:38 is in the X-ray diffusion phase...classic. Air is opaque to X-rays, but there's enough lower frequency radiation to pre-plasmatize the ropes, aka, the rope-trick. The fireball is expanding much faster than any shockwave can move. Also, I'll speculate that the ballon hat is made of completely ionized ballon atoms, and is slightly cooler and hence, "darker"...like a hot af sunspot.
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  2. 5J is 1 mg of TNT (surprise, about the amount of powder in a firecracker), which is 150 Billion U-235 decays, or 60 pico-grams (150 micron cube) at 100% yield.
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  3. depend if your McGuyver or MacGruber.
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  4. JPL v Goddard
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  5. A lot of that energy escapes as IR/vis/UV, an also neutron, gamma, and maybe delayed betas (10%?)...so the shockwave is different from pure TNT, which all turns into hot compressed gas. Ofc TNT at 10,000K radiates, but a hunk of metal at 100,000,000 K has a surface that is 10,000,000,000,000,000 times brighter.
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  6. the flux capacitor
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  7.  @Thepuffingyank  search Permissive Action Link (PAL). One just filled the hollow pit with BBs, preventing supercritical compression.
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  8.  @robertsneddon731  I am partial to deuterium, but why not tritium????
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  9.  @robertsneddon731  no really, you need the density of the gas in units? The number density of an ideal gas is fixed, so it scales a A.
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  10.  @robertsneddon731  oh. It,s the atomic weight of the molecule. So with air at 0.8x28 + 0.2x32 as a standard (eighty percent diatomic nitrogen, 20 percent O2), the lightest is H2 with 2. D2 and helium are 4, diatomic tritium is 6…going on 3 with twice the volume since it decays to helium 3.
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