Cooke and Wheatstone telegraph,1830s

Numéro d’image : 11679147
Cooke and Wheatstone telegraph,1830s
Cooke and Wheatstone telegraph. 19th-century artwork of the wiring and electromagnet coils in the five-needle electric telegraph developed in the 1830s by British inventors William Fothergill Cooke (1806-1879) and Charles Wheatstone (1802-1875). Letters from this grid of 20 were signalled with five needles (across centre). Here,two needles are tilted by the magnetic effect of the electric current,pointing to the letter 'V'. Six letters (C,J,Q,U,X and Z) were omitted from the grid. Artwork from an 1873 edition of a German book on the application of electromagnetism to the new technology of telegraphy
Licence : Droits gérés
Crédit: Science Photo Library / King's College London
Taille de l’image : 3898 px × 4649 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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