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4 avr. 1774 - Electrostatic Telegraph

Description:

Georges Louis Lesage patents the electric telegraph. Electric Telegraph uses electric signals to send communication via radio or line. The telegraph had a separate wire for each of the 26 letters of the alphabet and its range was only between two rooms of his home.

Ajouté au bande de temps:

INDUSTRIAL AGE

ByAly Jules
5 janv. 2020
0
0
344

Date:

4 avr. 1774
Maintenaint
~ Il y a 251 ans

Les images:

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