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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
By
Raphael Courouble
20 Mar 2021
2
0
364
Date:
jan 1, 1887
Now
~ 139 years ago
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