What is a hygrometer?
Quick Answer
A hygrometer is an instrument that measures humidity, or the amount of water vapor in the air. It is used in weather monitoring, homes, museums, and industry.
The Full Story
Hygrometers help measure atmospheric moisture, which affects comfort, weather, and preservation of materials. Some use hair, metal, or other materials that change with humidity, while modern electronic versions use sensors. Humidity readings are important in forecasting rain, preventing mold, and controlling environments in museums and laboratories. A related measurement is relative humidity, which compares the current water vapor level with the maximum the air can hold at that temperature. Hygrometers are widely used in meteorology and climate control.
Key Facts
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Suggested video title for this topic:
"How do you measure invisible water in the air? That’s a hygrometer’s job."