William Frank Vinen FRS HonFInstP (15 February 1930 – 8 June 2022)[3] was a British physicist specialising in low temperature physics.
Hall on attenuation of second sound in rotating liquid helium provided the first demonstration of the probable existence of vortex lines and later in an elegant experiment he gave the first direct proof that the circulation was quantized.
His extensive studies of heat currents in liquid helium have led to a thorough understanding of mutual friction between the normal and superfluid components and of critical flow effects.
At Birmingham he has continued to make important contributions not only to the liquid helium problem but also to the somewhat analogous one of flux flow and dissipation processes in type II superconductors.
"[6] In 1960, Vinen married Susan-Mary Audrey Master; they had one son, Richard, and one daughter, Katie, and lived in Birmingham.