دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the amount of moisture present in the air. It may be expressed in milligrams of water per cubic metre of air. Compare relative humidity.

n: a device used to measure the amount of water vapor, or relative humidity, of the air. See sling psychrometer.

n: the ratio of the amount of water vapor in the air to the amount it would contain if completely saturated at a given temperature and pressure. See absolute humidity.

n: a phraseology of humidity ,namely the ratio of absolute humidity and saturated absolute humidity under the same conditon

n: a hygrometer, or psychrometer, attached to a handle and chain cord, which is whirled rapidly through the air. It also has two thermometers. The bulb of one is kept wet so that the cooling that results from evaporation as the thermometers are whirled makes it register a lower temperature than the dry one. The difference between the dry and wet readings is a measure of the relative humidity of the atmosphere. See psychrometer.