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- Hydraulic_telegraph abstract "A hydraulic telegraph is the name given to two different hydraulic-telegraph telecommunication systems. The earliest one was developed in 4th century BC Greece, while the other one was developed in 19th century AD Britain. The Greek system was deployed in combination with semaphoric fires, while the latter British system was operated purely by hydraulic fluid pressure.Although both systems employed water in their sending and receiver devices, their transmission media were completely different. The ancient Greek system transmitted its semaphoric information to the receiver visually, which limited its use to line-of-sight distances in good visibility weather conditions only. The 19th century British system used water-filled pipes to effect changes to the water level in the receiver unit (similar to a transparent water-filled flexible tube used as a level indicator), thus limiting its range to the hydraulic pressure that could be generated at the transmitter's device.While the Greek device was extremely limited in the codes (and hence the information) it could convey, the British device was never deployed in operation other than for very short-distance demonstrations. The British device could, however, be used in any visibility within its range of operation so long as its conduits, if unheated, did not freeze in sub-zero temperatures —which contributed to its impracticality.".
- Hydraulic_telegraph thumbnail Greek_Hydraulic_Telegraph_of_Aeneas_relief.jpg?width=300.
- Hydraulic_telegraph wikiPageExternalLink index.htm.
- Hydraulic_telegraph wikiPageID "11390850".
- Hydraulic_telegraph wikiPageLength "9316".
- Hydraulic_telegraph wikiPageOutDegree "26".
- Hydraulic_telegraph wikiPageRevisionID "650421553".
- Hydraulic_telegraph wikiPageWikiLink Aeneas_Tacticus.
- Hydraulic_telegraph wikiPageWikiLink Ancient_Greece.
- Hydraulic_telegraph wikiPageWikiLink Byzantine_beacon_system.
- Hydraulic_telegraph wikiPageWikiLink Carthage.
- Hydraulic_telegraph wikiPageWikiLink Category:History_of_telecommunications.
- Hydraulic_telegraph wikiPageWikiLink Category:Optical_communications.
- Hydraulic_telegraph wikiPageWikiLink Category:Telegraphy.
- Hydraulic_telegraph wikiPageWikiLink Code.
- Hydraulic_telegraph wikiPageWikiLink First_Punic_War.
- Hydraulic_telegraph wikiPageWikiLink Flag_semaphore.
- Hydraulic_telegraph wikiPageWikiLink Francis_Whishaw.
- Hydraulic_telegraph wikiPageWikiLink Fryctoria.
- Hydraulic_telegraph wikiPageWikiLink Heliograph.
- Hydraulic_telegraph wikiPageWikiLink Hydraulic.
- Hydraulic_telegraph wikiPageWikiLink Hydraulic_pressure.
- Hydraulic_telegraph wikiPageWikiLink Hydraulics.
- Hydraulic_telegraph wikiPageWikiLink Optical_communication.
- Hydraulic_telegraph wikiPageWikiLink Polybius.
- Hydraulic_telegraph wikiPageWikiLink Semaphore.
- Hydraulic_telegraph wikiPageWikiLink Sicily.
- Hydraulic_telegraph wikiPageWikiLink Signal_lamp.
- Hydraulic_telegraph wikiPageWikiLink Spigot.
- Hydraulic_telegraph wikiPageWikiLink Tap_(valve).
- Hydraulic_telegraph wikiPageWikiLink Telecommunication.
- Hydraulic_telegraph wikiPageWikiLink Telegraph.
- Hydraulic_telegraph wikiPageWikiLink Telegraphy.
- Hydraulic_telegraph wikiPageWikiLink The_Histories_(Polybius).
- Hydraulic_telegraph wikiPageWikiLink United_Kingdom.
- Hydraulic_telegraph wikiPageWikiLink File:Greek_Hydraulic_Telegraph_of_Aeneas_relief.jpg.
- Hydraulic_telegraph wikiPageWikiLinkText "Greek hydraulic semaphore system".
- Hydraulic_telegraph wikiPageWikiLinkText "Hydraulic telegraph".
- Hydraulic_telegraph wikiPageWikiLinkText "fire".
- Hydraulic_telegraph wikiPageWikiLinkText "hydraulic semaphore system".
- Hydraulic_telegraph wikiPageWikiLinkText "hydraulic semaphore systems".
- Hydraulic_telegraph wikiPageWikiLinkText "hydraulic telegraph".
- Hydraulic_telegraph hasPhotoCollection Hydraulic_telegraph.
- Hydraulic_telegraph wikiPageUsesTemplate Template:Commons_category.
- Hydraulic_telegraph wikiPageUsesTemplate Template:Cquote.
- Hydraulic_telegraph wikiPageUsesTemplate Template:Reflist.
- Hydraulic_telegraph wikiPageUsesTemplate Template:Telecommunications.
- Hydraulic_telegraph subject Category:History_of_telecommunications.
- Hydraulic_telegraph subject Category:Optical_communications.
- Hydraulic_telegraph subject Category:Telegraphy.
- Hydraulic_telegraph hypernym Name.
- Hydraulic_telegraph type Communication.
- Hydraulic_telegraph comment "A hydraulic telegraph is the name given to two different hydraulic-telegraph telecommunication systems. The earliest one was developed in 4th century BC Greece, while the other one was developed in 19th century AD Britain. The Greek system was deployed in combination with semaphoric fires, while the latter British system was operated purely by hydraulic fluid pressure.Although both systems employed water in their sending and receiver devices, their transmission media were completely different.".
- Hydraulic_telegraph label "Hydraulic telegraph".
- Hydraulic_telegraph sameAs Υδραυλικός_Τηλέγραφος.
- Hydraulic_telegraph sameAs Telégrafo_hidráulico.
- Hydraulic_telegraph sameAs m.02r9wxr.
- Hydraulic_telegraph sameAs Водяной_телеграф.
- Hydraulic_telegraph sameAs Q3556577.
- Hydraulic_telegraph sameAs Q3556577.
- Hydraulic_telegraph wasDerivedFrom Hydraulic_telegraph?oldid=650421553.
- Hydraulic_telegraph depiction Greek_Hydraulic_Telegraph_of_Aeneas_relief.jpg.
- Hydraulic_telegraph isPrimaryTopicOf Hydraulic_telegraph.