Humidity is a term used to describe the amount of water vapor present in air. Measured by hygrometer.
Absolute humidity is the total mass of water vapor present in a given volume or mass of air. It does not take temperature into consideration.
Relative humidity is ratio of amount of water in air as compared to the maximum amount of water that air can absorb. Measured by Psychrometer
A psychrometer, or wet-and-dry-bulb thermometer, consists of two thermometers, one that is dry and one that is kept moist with distilled water on a sock or wick.[5] At temperatures above the freezing point of water, evaporation of water from the wick lowers the temperature, so that the wet-bulb thermometer usually shows a lower temperature than that of the dry-bulb thermometer. When the air temperature is below freezing, however, the wet-bulb is covered with a thin coating of ice and may be warmer than the dry bulb.
Relative humidity is computed from the ambient temperature as shown by the dry-bulb thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers. Relative humidity can also be determined by locating the intersection of the wet and dry-bulb temperatures on a psychrometric chart.
Measure of the amount of water (moisture) in air as compared to the maximum amount of water the air can absorb, expressed as a percentage. When air cannot absorb any more moisture (is fully saturated), its relative humidity is 100 percent.
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
Absolute humidity is the total mass of water vapor present in a given volume or mass of air. It does not take temperature into consideration.
Relative humidity is ratio of amount of water in air as compared to the maximum amount of water that air can absorb. Measured by Psychrometer
A psychrometer, or wet-and-dry-bulb thermometer, consists of two thermometers, one that is dry and one that is kept moist with distilled water on a sock or wick.[5] At temperatures above the freezing point of water, evaporation of water from the wick lowers the temperature, so that the wet-bulb thermometer usually shows a lower temperature than that of the dry-bulb thermometer. When the air temperature is below freezing, however, the wet-bulb is covered with a thin coating of ice and may be warmer than the dry bulb.
Relative humidity is computed from the ambient temperature as shown by the dry-bulb thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers. Relative humidity can also be determined by locating the intersection of the wet and dry-bulb temperatures on a psychrometric chart.
Measure of the amount
of water (moisture) in air as compared to the maximum amount of water
the air can absorb, expressed as a percentage. When air cannot absorb
any more moisture (is fully saturated), its relative humidity is 100
percent.
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
Measure of the amount of water (moisture) in air as compared to the maximum amount of water the air can absorb, expressed as a percentage. When air cannot absorb any more moisture (is fully saturated), its relative humidity is 100 percent.
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
Measure of the
amount of water (moisture) in air as compared to the maximum amount of
water the air can absorb, expressed as a percentage. When air cannot
absorb any more moisture (is fully saturated), its relative humidity is
100 percent.
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
Read more: http://www.businessdictionary.com/definition/relative-humidity.html
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