Bain's chemical telegraph, 1850.
3 3 c m
actual image size: 32cm x 25cm

Bain's chemical telegraph, 1850.

Exton, David

© Science Museum / Science & Society Picture Library


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.



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