Solar measuring machine, 1860

Solar measuring machine, 1860

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Credit: ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY

Caption: Solar measuring machine, 1860. Engraving showing an heliograph instrument being used to measure the total solar eclipse on 18th July 1860.

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Keywords: 1, 18, 18/07/1860, 1800s, 1860, 18th, 19th century, artwork, astronomical, astronomy, black-and-white, drawing, engraving, equipment, european, historical, history, history of science, illustration, instrument, july, machine, measure, measurement, measuring, monochrome, observation, one, paper, projected, projection, research, single, sun, technological, technology, total solar eclipse

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