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The word telegraph (from Ancient Greek: τῆλε 'at a distance' and γράφειν 'to write') was coined by the French inventor of the semaphore telegraph, Claude Chappe, who also coined the word semaphore. [2] A telegraph is a device for transmitting and receiving messages over long distances, i.e., for telegraphy.
The Telegraph: A History of Morse's Invention and Its Predecessors in the United States (McFarland, 2003). online; Downey, Greg. "Telegraph messenger boys: crossing the borders between history of technology and human geography." Professional Geographer 55.2 (2003): 134-145. online
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.
For a brief period, starting with the New York–Boston line in 1848, some telegraph networks began to employ sound operators, who were trained to understand Morse code aurally. Gradually, the use of sound operators eliminated the need for telegraph receivers to include register and tape.
Beauchamp, Ken, History of Telegraphy, Institution of Engineering and Technology, 2001 ISBN 978-0-85296-792-8. Bennett, Robert J., Local Business Voice: The History of Chambers of Commerce in Britain, Ireland, and Revolutionary America, 1760-2011, Oxford University Press, 2011 ISBN 0-19-958473-7.
The first working telegraph was built by the English inventor Francis Ronalds in 1816 and used static electricity. [8] An electromagnetic telegraph was created by Baron Schilling in 1832. Carl Friedrich Gauss and Wilhelm Weber built another electromagnetic telegraph in 1833 in Göttingen. At the University of Göttingen, the two had been ...
America Online CEO Stephen M. Case, left, and Time Warner CEO Gerald M. Levin listen to senators' opening statements during a hearing before the Senate Judiciary Committee on the merger of the two ...
The history of telecommunication began with the use of smoke signals and drums in Africa, Asia, and the Americas. In the 1790s, the first fixed semaphore systems emerged in Europe . However, it was not until the 1830s that electrical telecommunication systems started to appear.