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The telegraph line immediately made the Pony Express obsolete, which officially ceased operations two days later. The overland telegraph line was operated until 1869, when it was replaced by a multi-line telegraph that had been constructed alongside the route of the first transcontinental railroad.
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.
The first telegram. Professor Samuel Morse sending the dispatch as dictated by Miss Annie Ellsworth. The Baltimore–Washington telegraph line was the first long-distance telegraph system set up to run overland in the United States. [1] [2] [3]
Many electrical telegraph systems were invented that operated in different ways, but the ones that became widespread fit into two broad categories. First are the needle telegraphs, in which electric current sent down the telegraph line produces electromagnetic force to move a needle-shaped pointer into position over a printed list.
In 1866 the first transatlantic telegraph cable was completed, connecting America and Europe. [13] The completion of the First transcontinental telegraph in 1861 allowed messages to be sent from coast to coast in a matter of hours rather than weeks. In the late 1860s and 1870s, the telegraph expanded rapidly westward, connecting cities like ...
The Atlantic Telegraph Company led by Cyrus West Field constructed the first transatlantic telegraph cable. [1] The project began in 1854 with the first cable laid from Valentia Island off the west coast of Ireland to Bay of Bulls, Trinity Bay, Newfoundland. The first communications occurred on August 16, 1858, but the line speed was poor.
US Forest Service lookout using a Colomb shutter type heliograph in 1912 at the end of a telephone line. A heliograph is a telegraph that transmits messages by flashing sunlight with a mirror, usually using Morse code. The idea for a telegraph of this type was first proposed as a modification of surveying equipment (Gauss, 1821).
1844: Innocenzo Manzetti first suggests the idea of an electric "speaking telegraph", or telephone. 1849: Antonio Meucci demonstrates a communicating device to individuals in Havana. It is disputed that this is an electromagnetic telephone, but it is said to involve direct transmission of electricity into the user's body.