KING'S COLLEGE LONDON / SCIENCE PHOTO LIBRARY KING'S COLLEGE LONDON / SCIENCE PHOTO LIBRARY
Cooke-Wheatstone telegraph. British inventors William Fothergill Cooke and Charles Wheatstone. This simple telegraph was installed on early railway lines. At lower right is the Davy telegraph (1838) by British inventor Edward Davy. Diagram from 'Traite de telegraphie electrique' (1849) by French Catholic priest and physicist Francois Napoleon Marie Moigno (1804-1884).
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