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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).

Ajouté au bande de temps:

14 nov. 2019
0
0
170

Date:

12 mars 1920
Maintenaint
~ Il y a 105 ans

Les images: