초유체
thumb|right|Helium#Helium II|Helium II will "creep" along surfaces in order to find its own level—after a short while, the levels in the two containers will equalize. The [[Rollin film also covers the interior of the larger container; if it were not sealed, the helium II would creep out and escape.]] thumb|right|The liquid helium is in the superfluid phase. A thin invisible film creeps up the inside wall of the bowl and down on the outside. A drop forms. It will fall off into the liquid helium below. This will repeat until the cup is empty—provided the liquid remains superfluid.
AI overview
Superfluidity is a state of matter, demonstrated by helium at very low temperatures, in which the liquid can flow without friction and creep along surfaces—even climbing up and over container walls—in ways that normal liquids cannot. This property matters because it reveals extraordinary behavior in materials under extreme conditions and helps scientists understand the fundamental physics of how matter behaves at the quantum level.
AI-generated from the Wikipedia summary — may contain errors.
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- Liquid helium Rollin film.jpg
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