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jan 1, 1887 - Emission - réception ondes radio

Description:

Heinrich Hertz (sur distance de 20 mètres)

Added to timeline:

Les Evolutions Technologiques - la communication à distance

ByRaphael Courouble
20 Mar 2021
2
0
307

Date:

jan 1, 1887
Now
~ 138 years ago
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