|Alexander Popov – Russian physicist, inventor of radio.
|Description||Alexander Stepanovich Popov ( March 16 [O.S. March 4] 1859 – January 13 [O.S. December 31, 1905] 1906) was a Russian physicist, inventor of radio.
Popov’s work as a teacher at a Russian naval school led him to explore high frequency electrical phenomena. On May 7, 1895, he presented a paper on a wireless lightning detector he had built that worked via using a coherer to detect radio noise from lightning strikes. This day is celebrated in the Russian Federation as Radio Day. In a March 24, 1896, demonstration, he used radio waves to transmit a message between different campus buildings in St. Petersburg. His work was based on that of another physicist – Oliver Lodge, and contemporaneous with the work of Guglielmo Marconi. Marconi had just registered a patent with the description of the device two months after first transmission of radio signals made by Popov.[
|Published by/for:||Ministry of Communications, 1984|