Hygroscope design, 1893 is a photograph by Science Photo Library which was uploaded on March 6th, 2014.
Hygroscope design, 1893
Hygroscope design. 19th-century artwork of a simple home-made hygroscope design using a twisted helix of paper connected to a pointer on a sheet of... more
Title
Hygroscope design, 1893
Artist
Science Photo Library
Medium
Photograph
Description
Hygroscope design. 19th-century artwork of a simple home-made hygroscope design using a twisted helix of paper connected to a pointer on a sheet of card. As atmospheric water content increases or decreases, the paper helix will expand or contract, causing the pointer to rotate around the marked dial, indicating higher or lower water content. Artwork from the 12th volume (second period of 1893) of the French popular science weekly 'La Science Illustree'.
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March 6th, 2014
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