20 août 1793 - 1793 Commercial Semaphore System
Description:
Chappe brothers established the first commercial semaphore system between two locations near Paris. Napoleon used it a lot. Semaphore signaling spread to Italy, Germany and Russia. Thousands of men were employed manning the stations. The last operational semaphore system went out of business in 1860, Algeria.Ajouté au bande de temps:
Date:
20 août 1793
Maintenaint
~ Il y a 232 ans