Becquerel phosphoroscope, 19th century

Becquerel phosphoroscope, 19th century

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Credit: SCIENCE PHOTO LIBRARY

Caption: Becquerel phosphoroscope. This device, invented by the French physicist Alexandre-Edmond Becquerel (1820-1891), is used to measure the time taken for a phosphorescent material to stop glowing. Artwork from the tenth volume (second period of 1892) of the French popular science weekly 'La Science Illustree'.

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Keywords: 1800s, 1892, 19th century, alexandre-edmond becquerel, annual volume, artwork, becquerel phosphoroscope, black-and-white, device, equipment, european, french, historical, history, illustration, la science illustree, laboratory, louis figuier, magazine, measurement, measuring instrument, monochrome, phosphoroscope, physical, physics, popular science, technological, technology, weekly

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