John Bardeen (/bɑːrˈdiːn/; May 23, 1908 – January 30, 1991)[3] was an American physicist and electrical engineer. He is the only person to be awarded the Nobel Prize in Physics twice: first in 1956 with William Shockley and Walter Brattain for the invention of the transistor; and again in 1972 with Leon N Cooper and John Robert Schrieffer for a fundamental theory of conventional superconductivity known as the BCS theory.[2][6]
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The transistor revolutionized the electronics industry and ushered the birth of the Information Age. The semiconductor device also made possible the development of almost every modern electronic device, from telephones to computers to missiles. Bardeen's developments in superconductivity—for which he was awarded his second Nobel Prize—are used in nuclear magnetic resonancespectroscopy (NMR) or its medical sub-tool magnetic resonance imaging (MRI).
In 1990, John Bardeen appeared on LIFE Magazine's list of "100 Most Influential Americans of the Century.
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