Person Fleming; Sir; John Ambrose (1849 - 1945); electrical engineer and university teacher Fleming John Ambrose Sir electrical engineer and university teacher 1849 - 1945 British Male Greenfield, Lancaster, Lancashire, England 29 November 1849 18491129 Sidmouth, Devon, England 18/04/1945 19450418

9 Clifton Gardens, Maida Hill, London (1891); Greenfield, Manor Road, Sidmouth

Electrical engineering and university teacher Physics Electronic Engineering Education: Tutored by his mother at an early age; University College, London; Royal College of Chemistry; St John's College, Cambridge. MA (Camb) Career: Lecturer in Applied Mechanics, Cambridge; Professor of Electrical Engineering, University College, London (1885) Memberships: Television Society of London (President 1929) Honours: Kt 1929 Awards/Medals: Albert Medal 1921 Faraday Medal 1928 Duddell Medal and Prize 1930 IRE Medal of Honor 1933 Franklin Medal 1935 Parents: James Fleming DD (d. 1879), Congregational minister, and Mary Ann, daughter of John Bazley White of Swanscombe, Kent. Spouse: 1) Clara Ripley (1856/7–1917), daughter of Walter Freake Pratt, solicitor from Bath (11 June 1887); 2) Olive May Franks, singer (27 July 1928) Fleming invented the thermionic valve - an electrical rectifier that could turn alternating current into direct current. Devised commony used hand rules for electric motors and generators. Designed the wireless telegraphy set-up that was installed at Poldhu in Cornwall. In 1901, signals transmitted from Poldhu were heard 1,800 miles away on the other side of the Atlantic. He was born congenitally deaf. Medals and prizes: Hughes Medal 1910 Fellow 02/06/1892 43 Arthur William Rucker; John Hopkinson; Richard Tetley Glazebrook; Oliver Joseph Lodge; Frederick Bramwell; Arnold William Reinold; George Carey Foster; William Grylls Adams; William Henry Preece Herbert McLeod; David Edward Hughes; John Perry; William Crookes; Charles Vernon Boys; William Davidson Niven; John Hall Gladstone; John Henry Poynting; Raphael Meldola; Shelford Bidwell Sources: Bulloch's Roll; DSB Obituaries: Obituary Notices of Fellows of the Royal Society 1945-1948 vol 5 pp 231-242, plate, by W H Eccles References: Sir Brian Pippard, FRS, 'Schoolmaster-Fellows and the campaign for science education' in NR 2002 vol 56 pp 63-81, plate J T MacGregor-Morris, 'Sir Ambrose Fleming (Jubilee of the Valve)' in NR 1954-55 vol 11 pp 134-144, plate Fleming J A, IM Maull 001446.jpg International Standard Archival Authority Record for Corporate Bodies, Persons and Families - ISAAR(CPF) - Ottawa 1996 ISBN 0-9696035-3-3 National Council on Archives, Rules for the Construction of Personal, Place and Corporate Names, 1997 https://royalsocietypublishing.org/doi/10.1098/rsbm.1945.0014 https://royalsocietypublishing.org/action/doSearch?ContribAuthorRaw=Fleming%2C+John+Ambrose RCN 39385 RCN 39387 RCN 39390 RCN 39382 RCN 8598 RCN 39391 RCN 39383 RCN 39384 RCN 39386 RCN 14255 RCN 39389 RCN 39388 RCN 42183 RCN 11690 RCN 22296 29 Nov 1849 - 18 Apr 1945 The past Fellows entries are under continuous revision. If you have queries or additional information to contribute, please contact Library@royalsociety.org. Content in external sources is not controlled by the Royal Society and historical sources may include content that is now unacceptable. Reviewed on 14/08/2024 as part of the Name Authority Project update. NA7145 21/11/2001 Andyg Pmab 08/09/2025 RS_NET\VirginiaM Yes http://viaf.org/viaf/32790633 c1a200d2-97e0-4ac9-bd2a-21e060c574f3