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Chapman, Sydney

Born Eccles near Manchester, England, 29 January 1888

Died Boulder, Colorado, USA, 16 June 1970

British geophysicist Sydney Chapman contributed a number of ideas to the physics of magnetic fields and ionized gases, particularly those of the Earth and of the solar wind interacting with the Earth. He began his advanced education at a technical institute, now the University of Salford, in 1902, going on, under a competitive scholarship, to the University of Manchester in 1904 and receiving his first degree, in engineering, in 1907. Chapman added Manchester B.Sc. and M.A. degrees in mathematics before moving on, again under a scholarship, to Trinity College, Cambridge. Although he could not receive his mathematics degree until 1911, he had completed the examinations in 1910 and accepted a position as one of the chief assistants at the Greenwich Observatory under Frank Dyson. The other chief assistant was