Relative humidity

Summary

• Relative humidity is the ratio of the current vapor pressure of water in any gas (especially air) to the equilibrium vapor pressure, at which the gas is called saturated at the current temperature, expressed as a percentage. Equivalently, it is the ratio of the current mass of water per volume of gas and the mass per volume of a saturated gas.

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Related Topics

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  * This page is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Relative humidity".