Wet-bulb temperature: Quick Facts

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Facts

Also Known As	WBT

Photos

Illustration of two psychrometers: on the left, a sling psychrometer with two thermometers and a handle for swinging; on the right, a stationary psychrometer with labeled dry-bulb and wet-bulb thermometers, wicks, and a water container.

A wet bulb dry bulb thermometer, or hygrometer, with two glass thermometers mounted on a yellow board labeled dry and wet, used to measure humidity.

Sling psychrometer

A table showing relative humidity values dry-bulb temperature values on the y-axis and the difference between the dry-bulb and wet-bulb temperatures on the x-axis.

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Topics

wet-bulb thermometer temperature Wind chill Dew point thermometer Temperature inversion Absolute zero Lapse rate Temperature–humidity index low-temperature phenomena