Claude Chappe
Dublin Core
Title
Claude Chappe
Subject
The presentation of Claude Chappe on Saigon Central Post Office
Description
"Claude Chappe (1763–1805) invented a semaphore, the visual telegraph (Dilhac n.d., 1). He was the one who shortened the distance of transmissing messages.
"The lines between cities were composed by a series of towers (stations), 10–15 km apart, equipped with a pair of telescopes and a semaphore which beams were permitted discrete angular positions. These positions were assigned to numeric symbols in connection with a code book. Where the transmission of a message took days, it only needed tens of minutes with Chappe telegraph (individual symbols may be transmitted at a speed over 500 km/h!).
Started during the French Revolution, the network grew to 556 stations covering 3000 miles of lines (5000 km), most of them in France. However, cities like Amsterdam, Brussels, Mainz, Milan, Turin, Venice were also connected. Small networks were also deployed in Algeria and Morocco, while a mobile network was used during the Crimea war. In 1855, it was finally replaced by electric telegraph." (Dilhac n.d., 1)
References:
Dilhac, J-M. n.d. "The Telegraph of Claude Chappe – An Optical Telecommunication Network for the XVIIIth Century." Last modified n/a (5 June 2022).
"The lines between cities were composed by a series of towers (stations), 10–15 km apart, equipped with a pair of telescopes and a semaphore which beams were permitted discrete angular positions. These positions were assigned to numeric symbols in connection with a code book. Where the transmission of a message took days, it only needed tens of minutes with Chappe telegraph (individual symbols may be transmitted at a speed over 500 km/h!).
Started during the French Revolution, the network grew to 556 stations covering 3000 miles of lines (5000 km), most of them in France. However, cities like Amsterdam, Brussels, Mainz, Milan, Turin, Venice were also connected. Small networks were also deployed in Algeria and Morocco, while a mobile network was used during the Crimea war. In 1855, it was finally replaced by electric telegraph." (Dilhac n.d., 1)
References:
Dilhac, J-M. n.d. "The Telegraph of Claude Chappe – An Optical Telecommunication Network for the XVIIIth Century." Last modified n/a (5 June 2022).
Creator
Vo Dang Minh
Citation
Vo Dang Minh, “Claude Chappe,” Augustus in Saigon!?, accessed December 3, 2024, https://augustusinsaigon.uni-trier.de/items/show/343.