Dew point
The
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. At this temperature
condensation will begin, if conditions are suitable (presence of a solid surface or other condensation nuclei; otherwise see
supersaturation), and
water vapor condenses into liquid. When the dew point falls below freezing it is called the
frost point.
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