The history of telecommunications Wheatstone page 025

Notes: 1) This piece of telegraph cable was used in Cooke (1806-1879) and Wheatstone's (1802-1875) first experimental telegraph, which opened between Euston Square and Camden Town in London on 24 July 1837. The electrical current needed by the telegraph is carried by the 5 copper wires. The electrical current needed by the telegraph is carried by the 5 copper wires.These wires are in turn protected by an outer shell of wood and resin. These wires are in turn protected by an outer shell of wood and resin. Once telegraphy had been invented, attention focused on finding the best technical solutions for transmitting signals over long distances. Once telegraphy had been invented, attention focused on finding the best technical solutions for transmitting signals over long distances. Copper rapidly became the favorite conductor, because it has a low resistance and does not rust. Copper rapidly became the favorite conductor, because it has a low resistance and does not rust. Overland telegraphs had become well-established by the 1850s. Overland telegraphs had become well-established by the 1850s.

Charles Wheatstone