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Liquid Helium II the superfluid (part 3 The superfluid has zero viscosity)

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Published on Apr 29, 2009

A 1963 film by Alfred Leitner demonstrating the remarkable properties of liquid helium when cooled below the lambda point (the superfluid state). The superfluid is able to flow without viscosity through the smallest of holes.

Phase diagram of helium:

http://ltl.tkk.fi/research/theory/hel...

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