SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Alexander Stepanovich Popov (1859-1906), Russian radio pioneer and physicist, working on his radio, historical artwork. After joining the Navy's Torpedo School at Kronstadt, Popov started experiments with radio. In 1895 his radio receiver detected signals produced by an oscillator circuit. But it was only after reading Marconi's patent of 1896 that Popov made a radio transmitter. Popov was, however, the first to use an antenna for transmitting and receiving radio signals.
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