Morse telegraph key

Morse telegraph key

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Caption: Morse telegraph key, historical artwork. This is operated by 'tapping' the key (black knob, upper right). This pivots the lever (across centre), bringing it into contact with the electrical contact at right (round, below the lever). This completes an electrical circuit, sending a signal down one of the two wires (upper centre). When the key is released, the lever pivots away from this transmission contact and touches the contact on the other side, completing the receiving circuit to allow incoming messages to arrive. This system allowed messages to be sent as a coded series of dots and dashes known as the Morse Code. This was developed by Samuel Morse in the 1830s. Artwork from A Travers l'Electricite (G. Dary, Paris, 1900).

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Keywords: 1800s, 1900, 19th century, a travers l'electricite, artwork, communication, communications, dary, electrical, equipment, historical, history, history of science, illustration, morse code, morse key, one, single, technological, technology, telecommunications, telegraph key, telegraphic, telegraphy

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