Chronograph, 19th century artwork

Chronograph, 19th century artwork

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Caption: Chronograph. 19th Century artwork of an electromagnetic chronograph. Chronographs are used to record measurements over time. A stylus (at left) traces recordings on to recording paper (centre left). Cogs (centre and right) ensure a steady rotaion of the recording paper. Illustration from 'Memoire sur un projet de chronographe electro-magnetique et son emploi dans les experiences de l'artillerie' (Memoire on a draft electromagnetic chronograph and its use in artillery experiments, 1849) by Jean Baptiste Martin de Brettes.

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Keywords: 1800s, 1849, 19th century, artwork, black-and-white, chronograph, chronography, cogs, device, electric, electricity, electromagnetic, equipment, historical, history, illustration, instrument, measurement, monochrome, recording, stopwatch, technological, technology, time

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