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Léon Theremin, Russian physicist and engineer, invented the Theremin (born 1895)
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Leon Theremin
Russian inventor (1896–1993)
Lev Sergeyevich Termen, better known as Leon Theremin, was a Russian inventor, most famous for his invention of the theremin, one of the first electronic musical instruments and the first to be mass-produced. He also worked on early television research. His secret listening…Source: Wikipedia (CC BY-SA)
Theremin
Electronic musical instrument
The theremin is an electronic musical instrument controlled without physical contact by the performer. It is named after its inventor, Leon Theremin, who patented the device in 1928.Source: Wikipedia (CC BY-SA)