Day 25 of 365
January 25
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Physics Superfluidity and Zero Viscosity
At extremely cold temperatures near absolute zero, helium-4 becomes a superfluid with zero viscosity. Superfluids can flow up and over container walls, pass through molecular-sized pores, and remain in motion indefinitely without losing energy. This quantum mechanical phenomenon allows helium to violate classical physics intuitions and spontaneously crawl out of containers.
💡 Did you know?
If you stir a superfluid, it will continue spinning forever unless disturbed - perpetual motion at the quantum level!
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