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Why does this solid shrink under heat?
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Transcript
00:00An industrial blowtorch is heating a scandium-zirconium-tongue-state crystal lattice,
00:05causing it to undergo extreme negative thermal expansion.
00:08Instead of expanding outward like every known metal or rock,
00:12this exact solid aggressively shrinks in volume.
00:15Common sense says thermal energy forces atoms apart,
00:19but these specific atomic bonds pull inward with extreme force.
00:23Heat makes the oxygen atoms vibrate sideways so violently
00:27that they physically yank the metal framework closer together.
00:30This microscopic shrinkage obeys the laws of thermodynamics,
00:35while an industrial blowtorch heats a scandium-zirconium-tongue-state crystal lattice.
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