what is a hygrometer ? what are its uses?
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A hygrometer, also known as a psychrometer, is a device that is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is.
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Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.
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