After working on methods for the interpretation of gravitational and magnetic surveys for Gulf Oil, this man joined the department of physics at Princeton and did his PhD work under fellow Nobel laureate Eugene Wigner.  Along with Brattain, he discovered why a particular amplifier, designed by Shock
After working on methods for the interpretation of gravitational and magnetic surveys for Gulf Oil, this man joined the department of physics at Princeton and did his PhD work under fellow Nobel laureate Eugene Wigner.  Along with Brattain, he discovered why a particular amplifier, designed by Shockley made of pure silicon, failed to work, and his research led to the development of the point-contact form of a device. For 10 points, name this American physicist and engineer, a two-time winner of the Nobel Prize, first in 1956 for his co-invention of the transistor, and again in 1972 for elucidation with Cooper and Schrieffer of BCS theory.
After working on methods for the interpretation of gravitational and magnetic surveys for Gulf Oil, this man joined the department of physics at Princeton and did his PhD work under fellow Nobel laureate Eugene Wigner.  
John Bardeen