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Created page with "== Introduction == A superfluid is a state of matter in which the matter behaves like a fluid with zero viscosity. This state is characterized by the ability of the fluid to flow without losing kinetic energy. The concept of superfluidity is a macroscopic quantum mechanical phenomenon, which was first discovered in liquid helium, specifically helium-4, by Pyotr Kapitsa and John F. Allen. It has since been described through phenomena such as the Bardeen..."
