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Cowper's original writing telegraph, 1878.

Cowper's original writing telegraph, 1878.
3 1 c m
40cm
actual image size: 32cm x 23cm

Description

In 1878, the British engineer William Cowper (1819-1893), designed a machine that could reproduce a mesage written some miles away. It worked on the principle of sending meaning by interrupting an electric current. In practice, a pencil would re-create the original handwritten mesage by copying the movements of an electric current.

Image Details

Image Ref.
 
10212248

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