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12 март 1920 г. - first radio

Описание:

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 ноя 2019
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0
170

Дата:

12 март 1920 г.
Сейчас
~ 105 г назад

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