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- Quadruplex_telegraph abstract "The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time (two signals in each direction.) Quadruplex telegraphy thus implements a form of multiplexing.The technology was invented by American inventor Thomas Edison, who sold the rights to Western Union in 1874 for the sum of $10,000.The problem of sending two signals simultaneously in opposite directions on the same wire had been solved previously by Julius Wilhelm Gintl and improved to commercial viability by J. B. Stearns; Edison added the ability to double the number in each direction.To send two signals in a single direction at the same time, the quadruplex telegraph used one signal to vary the absolute strength or voltage of the signal (amplitude modulation) and the other signal to vary the phase (polarity) of the line (phase modulation), i.e., the direction of current flow imposed upon the wire.Today this concept is known as polar modulation, considering amplitude and phase as radius and angle in polar coordinates.".
- Quadruplex_telegraph wikiPageID "11126672".
- Quadruplex_telegraph wikiPageLength "1454".
- Quadruplex_telegraph wikiPageOutDegree "13".
- Quadruplex_telegraph wikiPageRevisionID "686388064".
- Quadruplex_telegraph wikiPageWikiLink Amplitude_modulation.
- Quadruplex_telegraph wikiPageWikiLink Category:Telegraphy.
- Quadruplex_telegraph wikiPageWikiLink Electrical_telegraph.
- Quadruplex_telegraph wikiPageWikiLink Joseph_Barker_Stearns.
- Quadruplex_telegraph wikiPageWikiLink Julius_Wilhelm_Gintl.
- Quadruplex_telegraph wikiPageWikiLink Multiplexer.
- Quadruplex_telegraph wikiPageWikiLink Phase_modulation.
- Quadruplex_telegraph wikiPageWikiLink Phonograph.
- Quadruplex_telegraph wikiPageWikiLink Polar_coordinate_system.
- Quadruplex_telegraph wikiPageWikiLink Polar_modulation.
- Quadruplex_telegraph wikiPageWikiLink Thomas_Edison.
- Quadruplex_telegraph wikiPageWikiLink Western_Union.
- Quadruplex_telegraph wikiPageWikiLinkText "Quadruplex Telegraphy".
- Quadruplex_telegraph wikiPageWikiLinkText "Quadruplex telegraph".
- Quadruplex_telegraph wikiPageWikiLinkText "quadruplex telegraph".
- Quadruplex_telegraph wikiPageWikiLinkText "quadruplex".
- Quadruplex_telegraph wikiPageUsesTemplate Template:Telecom-stub.
- Quadruplex_telegraph wikiPageUsesTemplate Template:Thomas_Edison.
- Quadruplex_telegraph subject Category:Telegraphy.
- Quadruplex_telegraph hypernym Type.
- Quadruplex_telegraph comment "The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time (two signals in each direction.) Quadruplex telegraphy thus implements a form of multiplexing.The technology was invented by American inventor Thomas Edison, who sold the rights to Western Union in 1874 for the sum of $10,000.The problem of sending two signals simultaneously in opposite directions on the same wire had been solved previously by Julius Wilhelm Gintl and improved to commercial viability by J. ".
- Quadruplex_telegraph label "Quadruplex telegraph".
- Quadruplex_telegraph sameAs Q2135531.
- Quadruplex_telegraph sameAs Quadruplex-telegraaf.
- Quadruplex_telegraph sameAs m.02r0w8q.
- Quadruplex_telegraph sameAs Q2135531.
- Quadruplex_telegraph wasDerivedFrom Quadruplex_telegraph?oldid=686388064.
- Quadruplex_telegraph isPrimaryTopicOf Quadruplex_telegraph.