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How to Use a Sling Psychrometer to Determine Relative Humidity
A sling psychrometer can be used to find relative humidity, which is expressed as a percentage. It accomplishes this by comparing the difference in temperature between a dry thermometer bulb and a wet thermometer bulb that has lost some of its moisture through evaporation. This video shows you how to use a Bacharach Sling Psychrometer.
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