Bilder Videos

Optische Telegraphie Bilder ❘ Science Photo Library

Chappe telegraph system,1791
11708842 - Chappe telegraph system,1791
Amontons and optical telegraphy,1690
11708841 - Amontons and optical telegraphy,1690
French optical telegraph system,1833
11672855 - French optical telegraph system,1833
French optical telegraph system,1833
11672856 - French optical telegraph system,1833
French optical telegraph system,1845
11672854 - French optical telegraph system,1845
Searchlight on Eiffel Tower, 19th century
12287351 - Searchlight on Eiffel Tower, 19th century
French optical telegraph system,1833
11672857 - French optical telegraph system,1833
Heliograph,19th century
11710375 - Heliograph,19th century
French optical telegraph system,1833
11672858 - French optical telegraph system,1833
Optical communications, 19th century
12287346 - Optical communications, 19th century
French optical telegraph system,1833
11672859 - French optical telegraph system,1833
Naval semaphore signalling
11904524 - Naval semaphore signalling
Optical telegraphy,1890
11632948 - Optical telegraphy,1890
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