French optical telegraph system. 19th-century artwork of the mechanical and optical telegraph system developed by French inventor Ennemond Gonon (born
French optical telegraph system. 19th-century artwork of the mechanical and optical telegraph system developed by French inventor Ennemond Gonon (born 1800). This system was described by Gonon as a new telegraph for day and night, universal and perpetual, and for all languages. Mechanical-optical telegraphy had been invented by French engineer Claude Chappe in the 1790s. Gonon's system was intended to improve on Chappe's, but the rise of the electric telegraph developed by Morse in the 1840s, meant Gonon's system was never built. This diagram was the frontispiece to Gonon's 'Des telegraphes aeriens et electriques' (1845).
Size: 3316px × 5340px
Photo credit: © KING'S COLLEGE LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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