Goldbeater's skin hygrometers

From Glossary of Meteorology
Redirect page

goldbeater's skin hygrometer

A hygrometer using goldbeater's skin as the sensitive element.

Variations of the physical dimensions of the skin caused by its hygroscopic character indicate atmospheric relative humidity. The length of a piece of goldbeater's skin changes between 5% and 7% for a change in humidity from 0% to 100%. The time constant of response becomes extremely long both at low ambient temperatures and at very high and very low relative humidity. (Note: Goldbeater's skin is the prepared outside membrane of the large intestine of an ox; it is used in goldbeating to separate the leaves of the metal.)

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.