Superfluid Vortex
Geometry of a straight vortex line in a superfluid, showing how the superfluid velocity rotates about a normal core (shown in blue) whose size is the superfluid coherence length, 
. (Unit: 8)
Geometry of a straight vortex line in a superfluid, showing how the superfluid velocity rotates about a normal core (shown in blue) whose size is the superfluid coherence length, . (Unit: 8)