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- Semaphore_line abstract "A semaphore telegraph, optical telegraph, shutter telegraph chain, Chappe telegraph, or Napoleonic semaphore is a system of conveying information by means of visual signals, using towers with pivoting shutters, also known as blades or paddles. Information is encoded by the position of the mechanical elements; it is read when the shutter is in a fixed position.The system was invented in 1792 in France by Claude Chappe, and was popular in the late 18th to early 19th century.Semaphore lines were a precursor of the electrical telegraph. They were far faster than post riders for bringing a message over long distances, but far more expensive and less private than the electrical telegraph lines which would replace them. The distance that an optical telegraph can bridge is limited by geography and weather; thus, in practical use, most optical telegraphs used lines of relay stations to bridge longer distances.Modern derivatives of the semaphore system include flag semaphore (a flag relay system) and the heliograph (optical telegraphy using mirror-directed sunlight reflections).".
- Semaphore_line thumbnail OptischerTelegraf.jpg?width=300.
- Semaphore_line wikiPageExternalLink chappe.html.
- Semaphore_line wikiPageExternalLink duesicilie.html.
- Semaphore_line wikiPageExternalLink telegraph_p1.html.
- Semaphore_line wikiPageExternalLink telegraph_p2.html.
- Semaphore_line wikiPageExternalLink telegraph.shtml.
- Semaphore_line wikiPageID "163251".
- Semaphore_line wikiPageRevisionID "605250656".
- Semaphore_line hasPhotoCollection Semaphore_line.
- Semaphore_line subject Category:History_of_telecommunications.
- Semaphore_line subject Category:Latin-alphabet_representations.
- Semaphore_line subject Category:Napoleonic_Beacons_in_England.
- Semaphore_line subject Category:Optical_communications.
- Semaphore_line subject Category:Telegraphy.
- Semaphore_line type Abstraction100002137.
- Semaphore_line type Beacon107264213.
- Semaphore_line type Cognition100023271.
- Semaphore_line type Communication100033020.
- Semaphore_line type Content105809192.
- Semaphore_line type Latin-alphabetRepresentations.
- Semaphore_line type NapoleonicBeaconsInEngland.
- Semaphore_line type PsychologicalFeature100023100.
- Semaphore_line type Representation105926676.
- Semaphore_line type Signal106791372.
- Semaphore_line type VisualSignal106873571.
- Semaphore_line comment "A semaphore telegraph, optical telegraph, shutter telegraph chain, Chappe telegraph, or Napoleonic semaphore is a system of conveying information by means of visual signals, using towers with pivoting shutters, also known as blades or paddles.".
- Semaphore_line label "Optische Telegrafie".
- Semaphore_line label "Semafoor (communicatie)".
- Semaphore_line label "Semaphore line".
- Semaphore_line label "Sémaphore (communication)".
- Semaphore_line label "Telegraf optyczny".
- Semaphore_line label "Telégrafo óptico".
- Semaphore_line label "Оптический телеграф".
- Semaphore_line label "腕木通信".
- Semaphore_line sameAs Optische_Telegrafie.
- Semaphore_line sameAs Telégrafo_óptico.
- Semaphore_line sameAs Sémaphore_(communication).
- Semaphore_line sameAs Telegrafi_optis.
- Semaphore_line sameAs 腕木通信.
- Semaphore_line sameAs Semafoor_(communicatie).
- Semaphore_line sameAs Telegraf_optyczny.
- Semaphore_line sameAs m.015pp3.
- Semaphore_line sameAs Q378499.
- Semaphore_line sameAs Q378499.
- Semaphore_line sameAs Semaphore_line.
- Semaphore_line wasDerivedFrom Semaphore_line?oldid=605250656.
- Semaphore_line depiction OptischerTelegraf.jpg.
- Semaphore_line isPrimaryTopicOf Semaphore_line.
