Reference numberCLP/4i/25
TitlePaper, description of a hygroscope by Robert Hooke
DescriptionA paper on weather by Robert Hooke. The illustrated instrument relies on a ripe wild-oat beard attached to a dial, which curls and straightens depending on the moisture in the air. Hooke indicates the dial should be created in the manner described by Emmanuel Maignan (Perspectiva Horaria (Rome, 1648), p. 89 and illustration).

Subject: Engineering / Meteorology
Physical descriptionInk on paper
Digital imagesView item on Science in the Making
Access statusOpen
Related materialRBC/2/128
Related records in the catalogueRBO/3/1
Fellows associated with this archive
NA8242Hooke; Robert (1635 - 1703); natural philosopher1635 - 1703
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