John Bardeen 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.The transistor revolutionized the electronics industry, making possible the development of almost every modern electronic device, from telephones to computers, and ushering in the Information Age. Bardeen's developments in superconductivity—for which he was awarded his second Nobel Prize—are used in nuclear magnetic resonance spectroscopy and medical magnetic resonance imaging .
In 1990, Bardeen appeared on LIFE Magazine's list of "100 Most Influential Americans of the Century." Wikipedia
Banquet Speech http://nobelprize.org/nobel_prizes/physics/laureates/1972/bardeen-speech.html, John Bardeen, The Nobel Prize in Physics 1972
told to Frederick Seitz as quoted by Lillian Hoddeson in No boundaries: University of Illinois vignettes https://books.google.com/books?id=02eFrTPIo4gC, University of Illinois Press 2004 (quote page 242)
