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Sir John Ambrose Fleming FRS (29 November 1849 – 18 April 1945) was an English electrical engineer and physicist who invented the first thermionic valve or vacuum tube, designed the radio transmitter with which the first transatlantic radio transmission was made, and also established the right-hand rule used in physics.
John Calvin Fleming Jr. (born July 5, 1951) is an American politician, physician, military veteran, and businessman who is the current Louisiana State Treasurer, having been elected in 2023. Fleming previously served as the U.S. representative for Louisiana's 4th congressional district from 2009 to 2017.
Blogger, producer of stage shows, movies, TV trailers and entertainment programmes. Scriptwriter, biographer with special expertise in UK comedy, the movie industry and bizarre variety acts. UK based but well-travelled. Latest details of John Fleming's work. Regularly updated.
Sir John Ambrose Fleming (born Nov. 29, 1849, Lancaster, Lancashire, Eng.—died April 18, 1945, Sidmouth, Devon) was an English engineer who made numerous contributions to electronics, photometry, electric measurements, and wireless telegraphy.
- The Editors of Encyclopaedia Britannica
Nov 26, 2017 · Sir John Ambrose Fleming is one of the world’s most famous and beloved electrical engineers of all time. Fleming made many great contributions to mankind and some groundbreaking innovations...
John Ambrose Fleming was an electronics pioneer who invented the oscillation valve, or vacuum tube, a device that would help make radios, televisions, telephones and even early electronic computers possible.
Mar 16, 2018 · John Ambrose Fleming - Biography, Facts and Pictures. Lived 1849 – 1945. In 1904, Ambrose Fleming invented the thermionic diode, a device allowing electric current to flow in one direction only. The invention gave birth to the modern electronic age. Fleming also devised the commony used hand rules for electric motors and generators.
