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12 mars 1920 - first radio

Description:

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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Date:

12 mars 1920
Maintenaint
~ Il y a 105 ans

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