John Bardeen is only person to win the Physics Nobel twice
American physicist John Bardeen won the Nobel Prize in Physics in 1956 as well as 1972. Bardeen shared the 1956 Prize with William Shockley and Walter Brattain for the invention of the transistor, at Bell Labs. Bardeen was then awarded the 1972 Prize with Leon Cooper and Robert Schrieffer for BCS theory of superconductivity, named after their initials.