The tiny sphere on the pedestal is a Pu-239 core. But the one on the left is U-233, a much less-common isotope.pic.twitter.com/aSUJxMBGLd
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@wellerstein What would you guess, about the size of a golf ball?
@AstuteDoofus Larger — baseball or so. Note steps at left for a sense of scale, and oscilloscope at right.
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@wellerstein based on the pic of the fat man mold u have, this could be enough for a bomb core? -
@wellerstein resin ball made from the mold I mean -
@AstuteDoofus The resin ball was a little smaller than the actual one, I believe — I think it contracted over time or as it cooled.
End of conversation
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