Category:Semaphore telegraphs: Difference between revisions
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[[Image:Semaphore Telegraphs Optical telegraph of Claude Chappe Attribution.jpg|thumb|right|A replica of a semaphore telegraph developed by Claude Chappe - Image by Lokilech]] | |||
A kind of optical telegraphy in which information is communicated through towers with moving moving arms whose position expresses symbols, today can also refer to flag semaphore systems | |||
[[Category:Telegraphy|{{PAGENAME}}]] | |||
Latest revision as of 21:25, 14 January 2013
A kind of optical telegraphy in which information is communicated through towers with moving moving arms whose position expresses symbols, today can also refer to flag semaphore systems
Media in category "Semaphore telegraphs"
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Semaphore Telegraphs Optical telegraph of Claude Chappe Attribution.jpg 450 × 600; 104 KB
