Transistor and is ubiquitous in modern electronic systems. Julius Edgar Lilienfeld patented a field-effect transistor in 1926 but it was not possible to actually construct a working device at that time. The first practically implemented device was a point-contact transistor invented in 1947 by American physicists John Bardeen, Walter Brattain, and William Shockley. The transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, calculators, and computers, among other things. The transistor is on the list of IEEE milestones in electronics, and Bardeen, Brattain, and Shockley shared the 1956 Nobel Prize in Physics for their achievement.
Board of Invention and Research Board of Invention and Research The Board of Invention and Research (BIR) was a British expert-level committee, initiated by the Admiralty of the Royal Navy. Established in 1915, the board was responsible for soliciting expert scientific assistance to solve tactical and technical problems. The Board first met on 19 July 1915 at the Whitehall Rooms in the Metropole Hotel, and remained based at the Metropole until the board and its scientific facilities were moved to permanent headquarters at Victory House on Cockspur Street. Chaired by Sir Jackie Fisher, former First Sea Lord, the BIR recruited of a number of scientists