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20 Aug 1793 Jahr - 1793 Commercial Semaphore System

Beschreibung:

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.

Zugefügt zum Band der Zeit:

Telecommunications: A History

ByPaul Duran Jimenez
20 Okt 2017
0
0
521

Datum:

20 Aug 1793 Jahr
Jetzt
~ 232 years ago
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