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 family Nobel, the inventor of dynamite who left the major part of his estate to the creation of the Nobel Prizes. The Nobel family originated from the village of Östra Nöbbelöv in Scania, hence the name. The first member was Petrus Olai Nobelius (1655–1707) who married Wendela Rudbeck (1668–1710), daughter of the famous Swedish scientist Olaus Rudbeck the Elder, also known as Olof Rudbeck. Members of the Nobel family are known not only for their interest in art but also for their inventive ability, which is sometimes referred to as a "Rudbeckian" trait, inherited from their ancestor Olaus Rudbeck, the elder.