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12 mar 1920 año - first radio

Descripción:

Over several years starting in 1894 the Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission).

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ByAmanda Lopez
14 nov 2019
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fecha:

12 mar 1920 año
Ahora mismo
~ 105 years ago

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