This image is not available for purchase in your country.

Wheatstone telegraph dial, 19th century

Wheatstone telegraph dial, 19th century

C024/6455

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Wheatstone telegraph dial. Historical illustration of the dial used the telegraph invented by British physicist Charles Wheatstone (1802-1875). This was the first practical public telegraph system that did not require knowledge of Morse code. The user sent each letter by holding down the relevant button and cranking a handle. Up to 15 words per minute were possible. Wheatstone's first telegraph (with Cooke) was patented in 1837. This single-needle refinement was developed in around 1845. Artwork from 'Electricite' (1911) by Max de Nansouty, part of the 'Les merveilles de la science' series of 1867-1891 by Louis Figuier.

Release details

Model release not required. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}