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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 word telegraph alone ...
The most widely used system was the Chappe telegraph, which was invented in France in 1792 by Claude Chappe. It was popular in the late eighteenth to early nineteenth centuries. [1] [2] [3] Chappe used the term "télégraphe" to describe the mechanism he had invented – that is the origin of the English word "telegraph". [4]
Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an American inventor and painter. After establishing his reputation as a portrait painter, Morse, in his middle age, contributed to the invention of a single-wire telegraph system based on European telegraphs.
Continuing his experiments in Brantford, Bell brought home a working model of his telephone. On August 3, 1876, from the telegraph office in Brantford, Bell sent a telegram to the village of Mount Pleasant four miles (six kilometres) away, indicating that he was ready. He made a telephone call via telegraph wires and faint voices were heard ...
An early experiment in electrical telegraphy was an 'electrochemical' telegraph created by the German physician, anatomist and inventor Samuel Thomas von Sömmerring in 1809, based on an earlier, less robust design of 1804 by Spanish polymath and scientist Francisco Salva Campillo. [10]
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 ...
He invented a precursor to the electric doorbell (specifically a bell that could be rung at a distance via an electric wire, 1831) [7] and electric relay (1835). [8] His work on the electromagnetic relay was the basis of the practical electrical telegraph , invented separately by Samuel F. B. Morse and Sir Charles Wheatstone .
The first commercial needle telegraph system and the most widely used of its type was the Cooke and Wheatstone telegraph, invented in 1837. The second category are armature systems, in which the current activates a telegraph sounder that makes a click; communication on this type of system relies on sending clicks in coded rhythmic patterns.