Cockcroft , Sir John Douglas
(1897–1967) British physicist
Cockcroft, who was born at Todmorden in northern England, entered Manchester University in 1914 to study mathematics, but left the following year to join the army. After World War I he was apprenticed to the engineering firm Metropolitan Vickers, which sent him to read electrical engineering at the Manchester College of Technology. He later went to Cambridge University, graduated in mathematics, and joined Ernest Rutherford's team at the Cavendish Laboratory.
Cockcroft soon became interested in designing a device for accelerating protons and, with E.T.S. Walton, constructed a voltage multiplier. Using this Cockcroft and Walton bombarded nuclei of lithium with protons and, in 1932, brought about the first nuclear transformation by artificial means: 73Li + 11H -> 42He +42He + 17.2 MeV
For this work Cockcroft and Walton received the 1951 Nobel Prize for physics. During World War II Cockcroft played a leading part in the development of radar. In 1940 he visited America as a member of the Tizard mission to negotiate exchanges of military, scientific, and technological information. In 1944 he became director of the Anglo-Canadian Atomic Energy Commission. He returned to Britain in 1946 to direct the new Atomic Energy Research Establishment at Harwell and remained there until 1959, when he was appointed master of Churchill College, Cambridge, a new college devoted especially to science and technology. Cockcroft received a knighthood in 1948.

Scientists. . 2011.

Look at other dictionaries:

  • Cockcroft,Sir John Douglas — Cock·croft (kŏkʹkrôft , krŏft ), Sir John Douglas. 1897 1967. British physicist who with Ernest Walton succeeded in splitting the atom (1931). They shared a 1951 Nobel Prize for their contributions to nuclear physics. * * * …   Universalium

  • Cockcroft, Sir John Douglas — ▪ British physicist born May 27, 1897, Todmorden, Yorkshire, Eng. died Sept. 18, 1967, Cambridge, Cambridgeshire  British physicist, joint winner, with Ernest T.S. Walton (Walton, Ernest Thomas Sinton) of Ireland, of the 1951 Nobel Prize for… …   Universalium

  • Cockcroft, sir John Douglas — ► (1897 1967) Físico británico. Fue premio Nobel de Física en 1951, compartido con E. T. S. Walton, por sus trabajos de creación de un acelerador de partículas …   Enciclopedia Universal

  • Sir John Douglas Cockcroft — noun British physicist who (with Ernest Walton in 1931) first split an atom (1897 1967) • Syn: ↑Cockcroft, ↑Sir John Cockcroft • Instance Hypernyms: ↑nuclear physicist …   Useful english dictionary

  • John Douglas Cockcroft — John Cockcroft Sir John Douglas Cockcroft (* 27. Mai 1897 in Todmorden, England; † 18. September 1967 in Cambridge) war ein englischer Atomphysiker und Nobelpreisträger. Inhaltsverzeichnis …   Deutsch Wikipedia

  • John Douglas Cockroft — John Cockcroft Sir John Douglas Cockcroft (* 27. Mai 1897 in Todmorden, England; † 18. September 1967 in Cambridge) war ein englischer Atomphysiker und Nobelpreisträger. Inhaltsverzeichnis …   Deutsch Wikipedia

  • John Douglas Cockcroft — Sir John Douglas Cockcroft (27 de mayo de 1897 18 de septiembre de 1967) fue un físico británico. Recibió el premio Nobel de Física por ser el primero en desintegrar un núcleo atómico, y fue primordial en el desarrollo de la …   Wikipedia Español

  • John Douglas Cockcroft — John Cockcroft Sir John Douglas Cockcroft. Sir John Douglas Cockroft (né le 27 mai 1897, mort le 18 septembre 1967) est un physicien atomiste anglais et lauréat du prix Nobel de physique. Biographie John Cockcroft est né le 27 …   Wikipédia en Français

  • Sir John Cockcroft — noun British physicist who (with Ernest Walton in 1931) first split an atom (1897 1967) • Syn: ↑Cockcroft, ↑Sir John Douglas Cockcroft • Instance Hypernyms: ↑nuclear physicist …   Useful english dictionary

  • Physiknobelpreis 1951: John Douglas Cockcroft — Ernest Thomas Sinton Walton —   Der englische und der irische Physiker erhielten den Nobelpreis für ihre Pionierarbeit bei der Umwandlung von Atomkernen durch künstlich beschleunigte Teilchen.    Biografien   Sir (seit 1948) John Douglas Cockcroft, * Todmorden (Yorkshire) 27 …   Universal-Lexikon

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