1 janv. 1791 - Telegraph
Description:
Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations.Ajouté au bande de temps:
Date:
1 janv. 1791
Maintenaint
~ Il y a 234 ans