Popov Alexander Stepanovich( Russian scientist, inventor of radio)
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Biography Popov Alexander Stepanovich
Alexander Stepanovich Popov was born in 1859 in the Urals village Turinskie Mines (later known as the city Krasnotur'insk). His father was a priest. In their family were seven children. Alexander was learning in seminary, then in seminary.
Studied Alexander Popov well characterized curiosity. He loved tinkering various technical devices and toys, these skills helped him to make further physical instruments for its research.
After graduating from secondary classes Perm seminary Aleksndr Popov joined the Physics and Mathematics Faculty of St. Petersburg University. During his studies, Alexander found that his most attracted latest physics and electrical engineering.
After graduation in 1882, Popov began to teach in a mine officer class in Kronstadt. Svobnoe time he used for physical experiments and the study of electromagnetic waves, open Heinrich Hertz.
After numerous experiments and studies Popov invented the radio. He built the world's first radio - a device for detecting and recording of electrical oscillations ". As a source of electromagnetic oscillations Alexander Stepanovich used Hertzian dipole.
May 7, 1895 Popov made a report at a meeting of the Russian Physico-Chemical Society in St. Petersburg, which has demonstrated its communication equipment in action. This day is considered the birthday of the radio.
Much time and effort, Alexander Stepanovich Popov spent on improving its radio. First, the transfer was possible only a few tens of meters, then a few miles, and then was brought to tens of kilometers.
Experimenting with the receiver, Popov discovered that their work influenced by lightning. Alexander Stepanovich decided to investigate this phenomenon. He made and tested a special device to record atmospheric and electric shocks to the paper tape. This device, named after storm indicator, has been applied in meteorology.
Winter 1899-1900 period Popova radio devices have been successfully used during the rescue of the battleship General-Admiral Apraksin, crashed off the island of Hogland. Shortly before Alexander Stepanovich Popov built a new type of receiver that can receive telegraph signals on the headset at a distance of 45 kilometers.
In 1901, Popov was appointed professor of St. Petersburg Electrotechnical Institute (later - "LETI"), and in 1905 became its director.
Alexander Stepanovich Popov, died Jan. 13, 1906.