History of the transistor about 15 volts". Brattain and H. R. Moore made a demonstration to several of their colleagues and managers at Bell Labs on the afternoon of 23 December 1947, often given as the birth date of the transistor. The "PNP point-contact germanium transistor" operated as a speech amplifier with a power gain of 18 in that trial. In 1956 John Bardeen, Walter Houser Brattain, and William Bradford Shockley were honored with the Nobel Prize in Physics "for their researches on semiconductors and their discovery of the transistor effect". Twelve people are mentioned as directly involved in the invention of the transistor
Nobel Memorial Prize in Economic Sciences Prize in Economics is not one of the Nobel Prizes, which were endowed by Alfred Nobel in his will. However, the nomination process, selection criteria, and awards presentation of the Prize in Economic Sciences are performed in a manner similar to that of the Nobel Prizes. Laureates are announced with the Nobel Prize laureates, and receive the award at the same ceremony. The Royal Swedish Academy of Sciences awards the prize "in accordance with the rules governing the award of the Nobel Prizes instituted through his [Alfred Nobel's] will," which stipulate that the prize be awarded annually to "those who