Janssen's photo revolver, artwork

Janssen's photo revolver, artwork

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Credit: ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY

Caption: Janssen's photo revolver. Artwork showing some of the dics and movement mechanisms within Jules Janssen's (1824-1907) photo revolver. This instrument was invented to capture the 1874 transit of Venus. Janssen took his photo revolver to Japan, where he took 48 exposures at one-and-a-half second intervals of the transit.

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Keywords: 1800s, 1874 transit of venus, 19th century, artwork, astronomical, astronomy, black-and-white, cog, cogs, daguerreotype, diagram, disc, discs, drawing, equipment, historical, history, history of science, illustration, instrument, jules janssen, labelled, labels, mechanical, monochrome, photo revolver, photographic plate, revolver photographique, technological, technology

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