humidity

(noun)

The amount of water vapor in the air.

Related Terms

  • equilibrium
  • vapor pressure

Examples of humidity in the following topics:

  • Humidity, Evaporation, and Boiling

    • The expression "it's not the heat, it's the humidity" makes a valid point.
    • Because evaporation is inhibited by high humidity, we feel hotter at a given temperature when the humidity is high.
    • The term relative humidity refers to how much water vapor is in the air compared with the maximum possible.
    • At its maximum, denoted as saturation, the relative humidity is 100%, and evaporation is inhibited.
    • For example, relative humidity rises in the evening, as air temperature declines, sometimes reaching the dew point.
  • The Evaporating Atmosphere

    • At room temperature and pressure, the water jar reaches equilibrium when the air over the water has a humidity of about 3%.
  • Evaporation

    • Three key parts to evaporation are heat, atmospheric pressure (determines the percent humidity) and air movement .
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