A psychrometer measures relative humidity by comparing the temperature in wet air and dry air. Specifically, it uses two thermometers: one with a dry bulb (measuring the ambient air temperature) and one with a wet bulb (measuring the temperature influenced by the evaporation of water). The difference in temperatures between the two thermometers can be used to calculate relative humidity.
How does a psychrometer measure relative humidity?(1 point)
It compares wet air and dry air at two different elevations.
it compares the level of moisture in the air at different times of the day.
It compares the temperature in wet air and dry air.
It compares the temperature to the level of moisture in the air.
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