Definition
An air thermometer is a device that measures temperature based on changes in the properties of air, typically volume or pressure. 🌡️ It relies on the principle that air expands when heated and contracts when cooled. Think of it as a specialized balloon, expanding with heat and shrinking with cold. Air thermometers can be simple, like Galileo thermometers, or more complex, using electronic sensors. They are commonly used for everyday temperature monitoring. Knowing the temperature helps you decide if it's hoodie weather!