Sujet
Chappe's aerial telegraph system, Algeria, mid-19th century, (c1870). Artist: Anon
Légende
Chappe's aerial telegraph system, Algeria, mid-19th century, (c1870). Claude Chappe's (1763-1805) optical telegraph station used a system of rope and pulleys operated inside the station which enabled the arms on the post to be moved into different semaphore positions. At the next station in the chain, using a telescope, the operators would read the semaphore message, then pass it to the subsequent station. From Les Merveilles de la Science (The Wonders of Science), by Louis Figuier. (Paris, c1870).
Oxford Science Archive
Date
1870
Crédit
Photo12/Heritage Images
Notre référence
HRM19B66_239
Model release
Non
Licence
Droits gérés
Format disponible
49,9Mo (3,5Mo) / 40,6cm x 30,8cm / 4794 x 3641 (300dpi)