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Figure 38

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.

Photo Category: Oceanography

Author: Y. Berard/Oceanographic Museum of Monaco/ NOAA

License: Public Domain Mark 1.0 (Public domain)
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Added On
18th October 2015
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