See also: Fleming

British scientist and inventor of the diode, Sir John Ambrose Fleming , sometimes also called Ambrose John Fleming , was born with Lancaster the November 29th 1848 and with lived until April 1945.

It was formed with the University College of London and with the catholic Université of Leuwen.

It was part-time lecturer in various universities like Cambridge, Nottingham and UCL and consulting for Marconi Wireless Telegraph Company, Swan, Ferranti, Edison Telephone and later in Edison Electric Light Company.

In 1892, Fleming presented an important article on the theory of the electric transformers to the Institut of the electrical engineers of London.

Later, in 1904, it invents and patents the lamp with two electrodes which it calls the valve with oscillations . It is the first diode, which one also called the thermionic valve, lamp or vacuum tube, kenotron, or Valve of Fleming. This invention was often regarded as the beginning of the electronic . It was worth the Franklin Médaille to him in 1935.

In 1906, Lee De Forest with the the United States added a electrode in the valve of Fleming, the Triode had been born.

The Royal Society decreed to him the Médaille Hughes in 1910.

Fleming was made knight in 1929, and is deceased with Sidmouth in the Devon.

June 2nd 1892 -->