Illustration depicting Heinrich Hertz's oscillator and reflecting metal sheets to show outward and return paths of electromagnetic (radio) waves. Heinrich Hertz (1857-1894) a German physicist who first conclusively proved the existence of
Invention of radio - Wikipedia
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Historical illustration of radio waves. Heinrich Rudolf Hertz (February 22, 1857 - January 1, 1894) was German physicist and discoverer of radio waves. Hertz studied at Berlin, gaining his PhD in 1880.
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Original Marconi apparatus - Stock Image - V400/0111 - Science Photo Library
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Stagetec Asia - In 1894 the young Italian inventor Guglielmo Marconi began working on the idea of building a commercial wireless telegraphy system based on the use of Hertzian waves (radio waves),
History of radio - Wikiwand
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Invention of radio - Wikipedia
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TRIBECA 2011 Audio Equipment Radio 1894 | eBay
History of Radio timeline | Timetoast timelines
History of radio - Wikipedia
Historia de la radio - Wikipedia, la enciclopedia libre
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