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Dew PointThe dew point of a given parcel of air is the temperature to which the parcel must be cooled, keeping pressure constant, for it to become saturated with water vapor. At this temperature condensation will begin if conditions are suitable (presence of a solid surface or other condensation nuclei)—water vapor then condenses into liquid water called dew.
When the dew point temperature falls below freezing it is called the frost point.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Dew Point" and from http://www.white-on.com
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