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Electrical telegraph

Electrical telegraphy is point-to-point distance communicating via sending electric signals over wire, a system primarily used from the 1840s until the late 20th century. It was the first electrical telecommunications system and the most widely used of a number of early messaging systems called telegraphs, that were devised to send text messages more…

History, Commercial telegraphy & Telegraphy in war

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Overview

History

Commercial telegraphy

Telegraphy and longitude

Telegraphy in war

End of the telegraph era

Bibliography

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Map overview Semantic statistics

Electrical telegraph

Nodes229
Edges228
Triples63
Avg. degree1.99
Density0.008734
Components1

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Electrical telegraph

Top relations

related to First working systems · 22
Electrical telegraph → Admiralty, At, Baron Schilling, Canstatt, Descriptions, Different, Electrical Apparatus, Elements, English, Francis Ronalds, Hammersmith Mall, His, It, July, Offering, Pavel Schilling, Ronalds, Schilling's, The, The Schilling
related to Cooke and Wheatstone system · 16
Electrical telegraph → Birmingham Railway, British, Camden Town, Cooke, Euston, Great Western Railway, It, John Lewis Ricardo, Paddington, Robert Stephenson's London, Slough, The, The Electric Telegraph Company, This, West Drayton, Wheatstone
related to Early work · 10
Electrical telegraph → All, Charles Marshall, Europe, From, In, Renfrew, Scots Magazine, Telegraphs, The, Using
related to Foy–Breguet system · 10
Electrical telegraph → Chappe, Foy-Breguet, France, In, Morse, Napoleonic, The, The Foy-Breguet, There, This

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Important terminology

telegraph system first telegraphy used morse electric electrical code wire war systems current two messages early one message could cables

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
semaphoresinstance ofthe electrical telegraph superseded optical telegraph systems0.80text
becoming the standard way to send urgent messagesinstance ofthe electrical telegraph superseded optical telegraph systems0.80text
telegraph linesinstance ofwas damaged by German bombing in 1941.Resistance movements in occupied Europe sabotaged communications facilities0.80text
forcing the Germans to use wireless telegraphyinstance ofwas damaged by German bombing in 1941.Resistance movements in occupied Europe sabotaged communications facilities0.80text
which could then be intercepted by Britaininstance ofwas damaged by German bombing in 1941.Resistance movements in occupied Europe sabotaged communications facilities0.80text
Electrical telegraphrelated to Cooke and Wheatstone systemThe0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemCooke0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemWheatstone0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemEuston0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemCamden Town0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemRobert Stephenson's London0.60section
Electrical telegraphrelated to Cooke and Wheatstone systemBirmingham Railway0.60section

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