Persistent currents in liquid 3He.

If you once start liquid lHe moving round a circle, it will continue to flow indefinitely without any further assistance and without slowing down at all, according to a recent experiment at Cornell University. The work in question, which was carried out by P.L.Gammeland J.D. Reppy of Cornell in collaboration with H.E. Hall of the University of Manchester, is reported in Physical Review Letters (52, 121; 1984)