John Ambrose Fleming: Difference between revisions
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In 1892, Fleming presented an important paper on electrical transformer theory to the Institution of Electrical Engineers in London. | In 1892, Fleming presented an important paper on electrical transformer theory to the Institution of Electrical Engineers in London. | ||
1904 Invented the two-electrode vacuum-tube rectifier, which he called the oscillation valve, for which he received a patent on 16 November. It was also called a thermionic valve, vacuum diode, kenotron, thermionic tube, or Fleming valve | |||
1928 July 27th. Married(2) the popular young singer Olive May Franks (b. 1898/9), of Bristol, daughter of George Franks, a Cardiff businessman. | 1928 July 27th. Married(2) the popular young singer Olive May Franks (b. 1898/9), of Bristol, daughter of George Franks, a Cardiff businessman. | ||
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==Sources of Information== | ==Sources of Information== | ||
<references/> | <references/> | ||
* [http://en.wikipedia.org/wiki/John_Ambrose_Fleming Wikipedia] | |||
{{DEFAULTSORT: Fleming, A }} | {{DEFAULTSORT: Fleming, A }} | ||
Revision as of 19:22, 12 January 2015
Sir John Ambrose Fleming (1849-1945), FRS, was an English electrical engineer and physicist. He is known for inventing the first thermionic valve or vacuum tube. He is also famous for the left hand rule (for electric motors).
1849 November 29th. Born in Lancaster the eldest of seven children of James Fleming DD (died 1879), a Congregational minister, and his wife, Mary Ann
Educated at University College School, London, and University College London. He entered St John's College, Cambridge in 1877, gaining his B.A. in 1881 and becoming a Fellow of St John's in 1883. He went on to Lecture at several universities including the University of Cambridge, the University of Nottingham, and University College London, where he was the first professor of Electrical Engineering. He was also consultant to the Marconi Wireless Telegraph Company, Swan Company, Ferranti, Edison Telephone, and later the Edison Electric Light Company.
1887 June 11th. Married(1) Clara Ripley (1856/7–1917), daughter of Walter Freake Pratt, a solicitor from Bath.
In 1892, Fleming presented an important paper on electrical transformer theory to the Institution of Electrical Engineers in London.
1904 Invented the two-electrode vacuum-tube rectifier, which he called the oscillation valve, for which he received a patent on 16 November. It was also called a thermionic valve, vacuum diode, kenotron, thermionic tube, or Fleming valve
1928 July 27th. Married(2) the popular young singer Olive May Franks (b. 1898/9), of Bristol, daughter of George Franks, a Cardiff businessman.
1945 April 18th. Died