Humidity

Humidity is the concentration of water vapor in the air. The concentration can be expressed as absolute humidity, specific humidity, or relative humidity.

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Absolute humidity defines the mass of water vapor in a given volume of moist air or gas, and is usually reported in grams per cubic meter, although grains per cubic foot is more commonly used in the United States.

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Water vapor: Water vapor or water vapour, also aqueous vapour, is the gas phase of water. On the Earth, water vapor is one state of the water cycle within the hydrosphere. Water vapor can be produced from the evaporation of liquid water or from the sublimation of ice. Under normal atmospheric conditions, wate...

Air: Air is a name for the mixture of gases present in the Earth's atmosphere....

Mass: Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. It is a central concept of classical mechanics and related subjects....