If you touch two CLEAN blocks of the same metal together in space, they weld!
— Sophia Gad-Nasr (@Astropartigirl) July 10, 2020
Atoms in solid metals move a bit. Touch two clean surfaces together, and the atoms can't tell they're in different blocks so they become one group of atoms, ie ONE SOLID.
(Gif: https://t.co/8YZxHWYoZP) pic.twitter.com/WAfv3VwhnX
via Twitter https://twitter.com/Astropartigirl
July 11, 2020 at 03:22AM
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