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Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not.
The culture of time and space, 1880–1918 (2nd ed. Harvard University Press, 2003). Leonard, Thomas C. "The Conquest of Time, Space, and Political Opponents." Reviews in American History 23#3 (1995), pp. 478–81. online; Müller, Simone M. Wiring the World: The Social and Cultural Creation of Global Telegraph Networks (Columbia University ...
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.
Electrical telegraphy is a point-to-point text messaging 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 quickly than physically carrying them.
The timeline of North American telegraphy is a chronology of notable events in the history of the electric telegraphy in the United States and Canada, including the rapid spread of telegraphic communications starting from 1844 and completion of the first transcontinental telegraph line in 1861.
Telegraphy is an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables. The Atlantic Telegraph Company led by Cyrus West Field constructed the first transatlantic telegraph cable. [ 1 ]
George May Phelps (March 19, 1820 – May 18, 1888) was a 19th-century American inventor of automated telegraphy equipment. He is credited with synthesizing the designs of several existing printers into his line of devices [1] which became the dominant apparatus for automated reception and transmission of telegraph messages.
History [ edit ] Cyrus Field , American businessman and financier, set his sights on laying the first transatlantic underwater telegraph cable after having been contacted by Frederic Newton Gisborne who attempted to connect St. John's, Newfoundland to New York City , but failed due to lack of funding. [ 2 ]