electromagnetic waves

Alexander Popov and his Radio Receiver

Alexander Popov and his Radio Receiver

On March 4, 1859, Russian physicist Alexander Stepanovich Popov was born. Alexander Popov is acclaimed in his homeland and eastern European countries as the inventor of radio. In 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. “I can express my hope that my apparatus will be applied for signaling at great distances by electric vibrations…
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Heinrich Hertz and the Successful Transmission of Electromagnetic Waves

Heinrich Hertz and the Successful Transmission of Electromagnetic Waves

On November 13, 1886, German physicist Heinrich Hertz succeeded to transmit electromagnetic waves from a sender to a receiver in Karlsruhe. Hertz conclusively proved the existence of the electromagnetic waves theorized by James Clerk Maxwell’s electromagnetic theory of light.[4] The unit of frequency – cycle per second – was named the “hertz” in his honor. “The rigour of science requires that we distinguish well the undraped figure of Nature itself from the gay-coloured…
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