Wheatstone and other telegraphs. 19th-century diagrams showing the telegraphs of British physicist Charles Wheatstone (1839 and 1840, right and lower

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Wheatstone and other telegraphs. 19th-century diagrams showing the telegraphs of British physicist Charles Wheatstone (1839 and 1840, right and lower left), of a Mr Butzengeiger (upper centre), and of Dutch physicist Pieter Otto Coenraad Vorsselman de Heer (upper left). Diagram from 'Traite de telegraphie electrique' (1849) by French Catholic priest and physicist Francois Napoleon Marie Moigno (1804-1884).

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Size: 4866px × 4331px
Photo credit: © KING'S COLLEGE LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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