Keywords: Liquid helium Rollin film.jpg en The liquid helium is in the superfluid phase A thin invisible film creeps up the inside wall of the cup 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 Own I AlfredLeitner took this photograph as part of my movie Liquid Helium Superfluid 1963 The movie had U S Copyright 1963 which expired and was not renewed PUBLIC DOMAIN Liquid helium Superfluidity |