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tom jennings /
npub1h7a…m2up
2024-07-04 23:30:15
in reply to nevent1q…0cgw

tom jennings on Nostr: Office parties during the Manhattan project on Los almos occasionally featured ice ...

Office parties during the Manhattan project on Los almos occasionally featured ice cubes made of D2O. You can tell because they don't float, they sink because mass of D is nearly double that of H.
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