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  2. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    When the moisture content remains constant and temperature increases, relative humidity decreases, but the dew point remains constant. [9] General aviation pilots use dew point data to calculate the likelihood of carburetor icing and fog, and to estimate the height of a cumuliform cloud base. Increasing the barometric pressure raises the dew ...

  3. Wet-bulb temperature - Wikipedia

    en.wikipedia.org/wiki/Wet-bulb_temperature

    The wet-bulb temperature is the lowest temperature that may be achieved by evaporative cooling of a water-wetted, ventilated surface.. By contrast, the dew point is the temperature to which the ambient air must be cooled to reach 100% relative humidity assuming there is no further evaporation into the air; it is the temperature where condensation (dew) and clouds would form.

  4. Psychrometrics - Wikipedia

    en.wikipedia.org/wiki/Psychrometrics

    Xchanger Inc, webpage Calculator for humidity, dew point, mass flows & heat flux for variable pressure systems with compressors, blowers, vacuum pumps and heat exchangers. Corwin's Calculators Calculator for humidity, dew point. How to read and use a psychrometric chart; Free Online Interactive Psychrometric Chart

  5. What is the heat index? How humidity and the dew point can ...

    www.aol.com/heat-index-humidity-dew-point...

    The heat index explains why humidity makes a difference. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium ...

  6. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air. A related parameter is the dew point. The amount of water vapor needed to achieve saturation ...

  7. Water activity - Wikipedia

    en.wikipedia.org/wiki/Water_activity

    Dew point hygrometers work by placing a mirror over a closed sample chamber. The mirror is cooled until the dew point temperature is measured by means of an optical sensor . This temperature is then used to find the relative humidity of the chamber using psychrometrics charts.

  8. Dew point depression - Wikipedia

    en.wikipedia.org/wiki/Dew_point_depression

    A lower dew point depression indicates that the air is more moist at a given temperature. [1]: 83 For a constant temperature, the smaller the difference, the more moisture there is, and the higher the relative humidity.

  9. Lifting condensation level - Wikipedia

    en.wikipedia.org/wiki/Lifting_condensation_level

    His equation makes use of the relationship between the LCL and dew point temperature discussed above. In the Earth's atmosphere near the surface, the lapse rate for dry adiabatic lifting is about 9.8 K/km, and the lapse rate of the dew point is about 1.8 K/km (it varies from about 1.6-1.9 K/km). This gives the slopes of the curves shown in the ...