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More than 5000 entries on the history, culture and life of Britain (published in 1993 by Macmillan, now out of print)
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James Chadwick
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(1891–1974, kt 1945) Physicist who worked at the *Cavendish Laboratory with *Rutherford and in 1932 discovered the neutron – the uncharged particle which is a pair, in subatomic physics, to the proton previously identified by Rutherford. The discovery of the neutron, which can penetrate the nucleus of atoms because it lacks any electrical charge of its own, opened the way to nuclear fission; Chadwick worked in the USA in 1943–5 on the development of the atomic bomb. He was awarded the Nobel prize for physics in 1935.
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