= Superfluidity
{tag=Second-order phase transition}
{wiki}
= Superfluid
{synonym}
\Video[http://youtube.com/watch?v=7eZlF6IToQs]
{title=Alfred Leitner - Liquid Helium II the Superfluid by Alfred Leitner (1963)}
{description=Original source: http://www.alfredleitner.com[].}
\Video[http://youtube.com/watch?v=9FudzqfpLLs]
{title=Ben Miller experiments with superfluid helium by BBC (2011)}
{description=Just quickly shows the superfluid helium climbing out o the cup, no detailed setup. With https://www2.physics.ox.ac.uk/contacts/people/rtaylor[professor Robert Taylor] from the <University of Oxford>.}