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Person

John Randall

A man wearing glasses and a dark suit stands against a neutral background, exuding a formal and professional demeanor.

British physicist (1905–1984) who, with Harry Boot at the University of Birmingham in 1940, designed the resonant-cavity magnetron. Their device produced microwave power orders of magnitude beyond anything previously achievable and was the technological pivot of Allied radar. After the war Randall moved to biophysics at King's College London, where he ran the lab that produced the X-ray data behind the structure of DNA.

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