When was the transistor that won the Nobel Prize for research on semiconductors and discovery of the transistor effect created?
Walter Houser Brattain Walter Houser Brattain ( ; February 10, 1902 – October 13, 1987) was an American physicist at Bell Labs who, along with fellow scientists John Bardeen and William Shockley, invented the point-contact transistor in December 1947. They shared the 1956 Nobel Prize in Physics for their invention. Brattain devoted much of his life to research on surface states.
Purcell effect The Purcell effect is the enhancement of a fluorescent molecule's spontaneous emission rate by its environment. In the 1940s Edward Mills Purcell discovered the enhancement of spontaneous emission rates of atoms when they are matched in a resonant cavity (the Purcell Effect). The magnitude of the enhancement is given by the Purcell factor