John Sealy Townsend
Sir John Sealy Edward Townsend, FRS (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.
John Townsend | |
|---|---|
John Sealy Edward Townsend (1868–1957) | |
| Born | 7 June 1868 Galway, County Galway, Ireland |
| Died | 16 February 1957 (aged 88) Oxford, England |
| Citizenship | United Kingdom |
| Alma mater | Trinity College, Dublin University of Cambridge |
| Known for | Townsend discharge Ramsauer–Townsend effect Townsend (unit) |
| Awards | Hughes Medal (1914) Knighthood (1941) |
| Scientific career | |
| Fields | Physicist |
| Institutions | University of Oxford |
| Academic advisors | J. J. Thomson |
| Doctoral students | Victor Albert Bailey Henry Brose Robert Van de Graaff |
| Signature | |
The phenomenon of the electron avalanche was discovered by him, and is known as the Townsend discharge.
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