The device employed to quantify the amount of water vapor present in the air is called a hygrometer. These instruments utilize various principles to determine relative humidity, absolute humidity, or dew point. An example of such a device is a psychrometer, which uses the temperature difference between a dry-bulb and a wet-bulb thermometer to calculate humidity.
Accurate determination of atmospheric moisture is essential across numerous fields. It plays a vital role in meteorology for weather forecasting, in agriculture for optimizing irrigation, and in industrial processes for controlling manufacturing environments. Historically, the development of these instruments has allowed for a better understanding of atmospheric processes and their impact on human activities.
