A 19th century dictionary engraving of a single-needle telegraph instrument. This early electrical telegraph used a needle moved electromagnetically to send and display messages. in 1820. Pavel Schilling developed a telegraph using needles suspended by threads. William Fothergill Cooke started building telegraphs in England and with Charles Wheatstone developed an improved version that was used by railway companies. Cooke's Electric Telegraph Company, (1846_ was the first public telegraph service in Britain.

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Size: 5906px × 5291px
Photo credit: © Colin Waters / Alamy / Afripics
License: Licensed
Model Released: No

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