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Popular Mechanics

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Scientists Confirm the Incredible Existence of ‘Second Sound’

Popular Mechanics
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Scientists at MIT have captured the movement of pure heat in exotic superfluids.

These exotic quantum gasses “slosh” heat side to side, instead of spreading out as one would expect.

Scientists call this behavior a material’s “ second sound” (the first being ordinary sound via a density wave) MIT scientists used radio frequencies to capture this phenomenon.