Day 25 of 365
January 25
P
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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