A device, such as a thermometer, having a wet sock over its sensing element.
a thermometer with the round end (Bulb) moistened with water
A device used to measure relative humidity. Evaporation of moisture lowers the temperature of the wet bulb compared to the dry bulb temperature of the same air sample.
the air temperature measured with a wet bulb - a small fabric sleeve around the bulb of a thermometer and wetted
The lowest temperature level of the air that can be reached by evaporatively cooling the air.
Device used in measurement of relative humidity. Evaporation of moisture lowers temperature of wet bulb compared to dry bulb temperature in same area.