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jan 3, 1887 - Première transmission d'ondes radio sur 20 mètres
Description:
Heinrich Hertz a réussit la première émission et réception d'ondes radio en 1887,sur une. distance de 20 mètres,
Added to timeline:
frise chronologique
By
Leseur
28 Mar 2021
0
0
169
Date:
jan 3, 1887
Now
~ 139 years ago
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