Bain's chemical telegraph, 1850.

Exton, David

 
Bain's chemical telegraph, 1850.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Description

Devised by the Scottish clockmaker Alexander Bain (1810-1877), this chemical telegraph was the first system of electrical facsimile transmision, and was used for recording ordinary Morse code signals. It was first demonstrated by Bain in 1842. Viewed from above.

© Science Museum / Science & Society Picture Library

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