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. | |||
On August 20, 1911, the first cable message sent around the world from the U.S. by commercial telegraph was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco. | |||
== In the News == | |||
<gallery> | |||
File:Samuel Morse 1840.jpg|link=Samuel Morse (nonfiction)|June 20, 1840: [[Samuel Morse (nonfiction)|Samuel Morse]] receives the patent for the telegraph. | |||
</gallery> | |||
== Fiction cross-reference == | |||
* [[Gnomon algorithm]] | |||
* [[Gnomon Chronicle]] | |||
== Nonfiction cross-reference == | |||
* [[Electricity (nonfiction)]] | |||
* [[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)]] | |||
Latest revision as of 21:33, 13 September 2018
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.
On August 20, 1911, the first cable message sent around the world from the U.S. by commercial telegraph was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco.
In the News
June 20, 1840: Samuel Morse receives the patent for the telegraph.
Fiction cross-reference
Nonfiction cross-reference
External links:
- Electrical telegraph @ Wikipedia