: A means of translating that physical change into a readable numerical value, such as a scale on glass or a digital display. Major Types of Thermometers
The Evolution and Science of the Thermometer The is a fundamental instrument used to measure temperature or a temperature gradient, essentially quantifying the degree of "hotness" or "coldness" of an object or environment. Derived from the Greek words thermos (heat) and metron (measure), it has evolved from 17th-century prototypes into highly sophisticated digital and infrared devices used in medicine, industry, and domestic life. How a Thermometer Works Every thermometer consists of two essential components: thermometer
: A part that experiences a physical change when the temperature shifts (e.g., the bulb of a mercury thermometer or a thermistor in a digital one). : A means of translating that physical change
Modern technology has produced various types of thermometers tailored for specific uses: How a Thermometer Works Every thermometer consists of