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Sir Robert Alexander, 1892–1973, Scottish physicist: helped develop radar.
Sir Robert Alexander. 1892–1973, Scottish physicist, who played a leading role in the development of radar
British physicist who pioneered the development of radar. In 1919 he produced a system for locating thunderstorms by tracking their radio emissions. In the 1930s Watson-Watt led the team that developed radar into a practical system for locating aircraft.


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