video from BBC documentary Absolute Zero and explanation from wikipedia
Superfluidity is a state of matter in which the matter behaves like a fluid without viscosity and with infinite thermal conductivity. The substance, which looks like a liquid, will flow uncontrollably, and also will be at exactly the same temperature throughout itself. Despite its lack of viscosity, the liquid still has surface tension which allows it to rise up the sides of its container without the normal restrictions of flow. This allows the liquid to "flow" up the sides of the container and over the top.
No comments:
Post a Comment