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1 janv. 1830 - Telegraph

Description:

-developed in the 1930s to 1940s
-revolutionized long distance communication
-worked by transmitting electrical signals over a wire laid between stations

Exposure: I wasn't born yet

Ajouté au bande de temps:

17 déc. 2018
0
0
741

Date:

1 janv. 1830
Maintenaint
~ Il y a 195 ans

Les images: