Boris Rosing
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Boris L'vovich Rosing (Бори́с Льво́вич Ро́зинг, 1869 - 1933) was a Russian scientist and inventor in the field of television. In 1907, he envisioned a TV system using the CRT that was practically demonstrated in 1911. By 1907, Rosing had developed a television system which employed a mechanical disc system as a camera, and a very early cathode ray tube (developed in Germany by Karl Ferdinand Braun) as a receiver. The system was primitive, but it was more electronic than mechanical. Rosing and Vladimir Zworykin exhibited a television system in 1910, using a mechanical scanner in the transmitter and the electronic Braun tube in the receiver.
At the outbreak of World War I, Zworykin decided to leave Russia for the United States in 1919. Zworykin lost contact with Rosing during the Bolshevik Revolution of 1917. Rosing continued his television research until 1931 when he was exiled to Archangel by Stalin. Rosing died in exile in 1933.