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Boris Lvóvich Rosing (1869–1933)
he was a Russian scientist and inventor in the field of television.

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He was born in San petersburgo, Russian Empire.

Boris studied at Vvdensky St. Petersburg gym, where he graduated with a gold medal. There, he distinguished himself in his studies of the exact sciences, literature, and music. Next, he studied physics and mathematics at the University of Saint Petersburg, which was a major research center.

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After graduating with honors in 1891, he remained at the university to pursue graduate studies in physics. The subject of his thesis was magnetic hysteresis. He discovered hysteresis in the lengths of iron wires in the presence of cyclic magnetic fields, a phenomenon that was independently discovered by the Japanese researcher Hantaro Nagaoka.

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He subsequently became a physics instructor at the St. Petersburg Institute of Technology. Starting in 1894, he was also a professor of physics at the Konstantinovsky Artillery School, and since 1906, he lectured on electrical and magnetic measurements as part of women's polytechnic courses.

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In 1911, Boris Rosing and his student Vladimir Kosma Zworykin created a television system that performed the sweep using a mirror-drum to transmit, in Zworykin's words, "very crude images" through the Braun electronic tube (cathode ray tube). on the receiver. The movement of the images was not possible because in the scan "the sensitivity was not enough and the selenium cell was lagging."