Back جون سيلي تاونسند Arabic جون سيلى تاونسند ARZ جان سیلی تاونزند AZB John Sealy Edward Townsend Catalan John Sealy Townsend German John Sealy Townsend Spanish جان سیلی تاونزند Persian John Townsend French John Sealy Townsend Irish John Sealy Townsend Italian
John Sealy Townsend | |
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| Born | John Sealy Edward Townsend 7 June 1868 Galway, Ireland |
| Died | 16 February 1957 (aged 88) Oxford, England |
| Citizenship | Ireland United Kingdom |
| Alma mater | Trinity College Dublin University of Cambridge |
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| Scientific career | |
| Fields | Mathematical physics |
| Institutions | University of Oxford (1900–1941) |
| Academic advisors | J. J. Thomson |
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Sir John Sealy Edward Townsend (/ˈtaʊn.zɛnd/; 7 June 1868 – 16 February 1957) was an Irish-British mathematical physicist who conducted various studies concerning the electrical conduction of gases (concerning the kinetics of electrons and ions) and directly measured the electrical charge. He was a Wykeham Professor of physics at Oxford University.[2]
The phenomenon of the electron avalanche was discovered by him, and is known as the Townsend discharge.
- ^ Von Engel, A. (1957). "John Sealy Edward Townsend. 1868-1957". Biographical Memoirs of Fellows of the Royal Society. 3: 256–272. doi:10.1098/rsbm.1957.0018.
- ^ Bleaney, B. (2002). "Two Oxford science professors, F. Soddy and J. S. E. Townsend". Notes and Records of the Royal Society. 56 (1): 83–88. doi:10.1098/rsnr.2002.0168. PMID 15773039. S2CID 336398.