• Born date: 1896-08-27
  • Born in: Russian empire
  • Death date: 1993-11-03
  • Death in: Russia
Léon Theremin

Lev Sergeyevich Termen (Russian: Ле́в Серге́евич Терме́н) (27 August [O.S. 15 August] 1896 – 3 November 1993), or Léon Theremin in The United States, was a Russian and Soviet inventor. He is most famous for his invention of the theremin, one of the first electronic musical instruments, and the first to be mass produced. He is also the inventor of interlace,[citation needed] a technique of improving the picture quality of a video signal, widely used in video and television technology.

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