American physicist. He shared two Nobel Prizes in physics, one in 1956 for the development of the electronic transistor, and one in 1972 for a theory of superconductivity.
American physicist who, with William Brattain and William Shockley, invented the transistor in 1947. For this work all three shared a 1956 Nobel Prize for physics. In 1972 Bardeen shared another Nobel Prize for physics with American physicists Leon Neil Cooper and John Robert Schrieffer for their development of the theory of superconductivity.