Question

What is relative humidity?
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Answer 1

Answer:

Relative humidity is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air.

Answer 2

Answer:

1. the amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same temperature.