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1 janv. 1887 - Emission - réception ondes radio

Description:

Heinrich Hertz (sur distance de 20 mètres)

Ajouté au bande de temps:

Les Evolutions Technologiques - la communication à distance

ByRaphael Courouble
20 mars 2021
2
0
307

Date:

1 janv. 1887
Maintenaint
~ Il y a 138 ans
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