Electrical telegraph (nonfiction): Difference between revisions
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An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication lines or radio. | [[File:Telegraph.jpg|thumb|A printing electrical telegraph receiver, with transmitter key at bottom right.]]An '''electrical telegraph''' is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication lines or radio. | ||
The electrical telegraph, or more commonly just telegraph, | |||
The electrical telegraph, or more commonly just telegraph, becoming the first form of electrical telecommunications, superseding optical semaphore telegraph systems. | |||
In a matter of decades after their creation in the 1830's, electrical telegraph networks permitted people and commerce to transmit messages across both continents and oceans almost instantly, with widespread social and economic impacts. | |||
== In the News == | |||
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</gallery> | |||
== Fiction cross-reference == | |||
* [[Crimes against mathematical constants]] | |||
* [[Gnomon algorithm]] | |||
== Nonfiction cross-reference == | |||
* [[Telephone switchboard (nonfiction)]] | |||
External links: | |||
* [https://en.wikipedia.org/wiki/Electrical_telegraph Electrical telegraph] @ Wikipedia | |||
[[Category:Nonfiction (nonfiction)]] | |||
[[Category:Machines (nonfiction)]] | |||
[[Category:Information systems (nonfiction)]] | |||
Revision as of 21:41, 17 June 2017
An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication lines or radio.
The electrical telegraph, or more commonly just telegraph, becoming the first form of electrical telecommunications, superseding optical semaphore telegraph systems.
In a matter of decades after their creation in the 1830's, electrical telegraph networks permitted people and commerce to transmit messages across both continents and oceans almost instantly, with widespread social and economic impacts.
In the News
Fiction cross-reference
Nonfiction cross-reference
External links:
- Electrical telegraph @ Wikipedia