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NOAA Photo Library Image - ship4495

Figure 38. Hygrometer register, built to record variations in relative humidity. The hygrometer is built on principles discovered by Horace Benedict Saussure in 1783 and uses the changes in length of human hair and animal hair with humidity to derive relative humidity. The exact age of this recording instrument is unknown.

Image ID: ship4495, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco

Category: Oceanography/

High Resolution Photo Available

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Last Updated:
November 10, 2017