humidity, relative

humidity, relative
   The ratio, expressed as a percentage, of the amount of water vapor actually present in air of a given temperature, as compared with the greatest possible amount of water vapor that could be present in air at that temperature. Calculation of relative humidity can be done from tables, special slide rules or calculators, graphs, or complex equations [23].
   See also hygrometer; psychrometer.

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • Relative humidity — is a measurement of the amount of water vapor that exists in a gaseous mixture of air and water. Estimating relative humidity The relative humidity of an air water vapor mixture can be estimated if both the temperature ( T ) and the dew point… …   Wikipedia

  • Humidity — is the amount of water vapor in the air. In daily language the term humidity is normally taken to mean relative humidity. Relative humidity is defined as the ratio of the partial pressure of water vapor in a parcel of air to the saturated vapor… …   Wikipedia

  • humidity — [hyo͞o mid′ə tē, yo͞omid′ə tē] n. pl. humidities [ME humydite < OFr humidite < LL humiditas < L humidus: see HUMID] 1. moistness; dampness 2. the amount or degree of moisture in the air: see ABSOLUTE HUMIDITY, RELATIVE HUMIDITY …   English World dictionary

  • relative air humidity — oro drėgnis (visos oro masės atžvilgiu) statusas T sritis fizika atitikmenys: angl. relative air humidity; relative weather humidity vok. relative Luftfeuchte, f; relative Luftfeuchtigkeit, f rus. относительная влажность воздуха, f pranc.… …   Fizikos terminų žodynas

  • relative weather humidity — oro drėgnis (visos oro masės atžvilgiu) statusas T sritis fizika atitikmenys: angl. relative air humidity; relative weather humidity vok. relative Luftfeuchte, f; relative Luftfeuchtigkeit, f rus. относительная влажность воздуха, f pranc.… …   Fizikos terminų žodynas

  • humidity — Moisture or dampness, as of the air. [L. humiditas, dampness] absolute h. the mass of water vapor actually present per unit volume of gas or air. relative h. the actual amount of water vapor present in the air or in a gas, divided by the amount… …   Medical dictionary

  • relative Luftfeuchte — oro drėgnis (visos oro masės atžvilgiu) statusas T sritis fizika atitikmenys: angl. relative air humidity; relative weather humidity vok. relative Luftfeuchte, f; relative Luftfeuchtigkeit, f rus. относительная влажность воздуха, f pranc.… …   Fizikos terminų žodynas

  • relative Luftfeuchtigkeit — oro drėgnis (visos oro masės atžvilgiu) statusas T sritis fizika atitikmenys: angl. relative air humidity; relative weather humidity vok. relative Luftfeuchte, f; relative Luftfeuchtigkeit, f rus. относительная влажность воздуха, f pranc.… …   Fizikos terminų žodynas

  • relative humidity — Humidity Hu*mid i*ty, n. [Cf. F. humidit[ e].] 1. Moisture; dampness; a moderate degree of wetness, which is perceptible to the eye or touch; used especially of the atmosphere, or of anything which has absorbed moisture from the atmosphere, as… …   The Collaborative International Dictionary of English

  • relative humidity — Humidity Hu*mid i*ty, n. [Cf. F. humidit[ e].] 1. Moisture; dampness; a moderate degree of wetness, which is perceptible to the eye or touch; used especially of the atmosphere, or of anything which has absorbed moisture from the atmosphere, as… …   The Collaborative International Dictionary of English

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