Sir Hermann Bondi (1919-2005), Mathematician
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Born in Vienna, Bondi joined Trinity College, Cambridge, as a research fellow in 1942. After the war, he taught mathematics at Cambridge and King's College. In 1948 Bondi formulated the cosmological theory of a steady-state universe with Fred Hoyle and Thomas Gold. He was director general of the European Space Research Organization (1967-71) and chief scientific adviser to the Ministry of Defence (1971-1980). He was chairman of the Natural Environment Research Council, from 1980, and master of Churchill College, Cambridge, from 1983. Works include Cosmology (1952), The Universe at Large (1960), Relativity and Commonsense (1964), and Assumption and Myth in Physical Theory (1967).