Search results
Results from the WOW.Com Content Network
18 July 1866: A new transatlantic telegraph cable between North America and Europe is successfully completed. 1870: Telegraph lines from Britain are connected to India. 20 November 1871: Service to Winnipeg opens. [114] 1871: Practical duplex telegraphy system, allowing two messages to be sent over wire at the same time, one in each direction.
What Hath God Wrought: The Transformation of America, 1815-1848 (2009) pp 690–698. Israel, Paul. From Machine Shop to Industrial Laboratory: Telegraphy and the Changing Context of American Invention, 1830–1920 (Johns Hopkins UP, 1992). Jepsen, Thomas C. My Sisters Telegraphic: Women in the Telegraph Office, 1846–1950 (Ohio UP, 2000).
Contemporary map of the 1858 transatlantic cable route. Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. . Telegraphy is a largely obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunication
In America, the end of the telegraph era can be associated with the fall of the Western Union Telegraph Company. Western Union was the leading telegraph provider for America and was seen as the best competition for the National Bell Telephone Company. Western Union and Bell were both invested in telegraphy and telephone technology.
The Middle Passage was the stage of the Atlantic slave trade in which millions of enslaved Africans [1] were forcibly transported to the Americas as part of the triangular slave trade. Ships departed Europe for African markets with manufactured goods (first side of the triangle), which were then traded for slaves with rulers of African states ...
The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up in 1982 and replaced by a system of competitors.
Monument in downtown Salt Lake City, Utah, marking the approximate location where the first transcontinental telegraph line was completed.. The first transcontinental telegraph (completed October 24, 1861) was a line that connected the existing telegraph network in the eastern United States to a small network in California, by means of a link between Omaha, Nebraska and Carson City, Nevada ...
Part of the Russian–American Telegraph line bearing the single wire of an earth-return circuit, c. 1866. Earth-return telegraph is the system whereby the return path for the electric current of a telegraph circuit is provided by connection to the earth through an earth electrode. Using earth return saves a great deal of money on installation ...