what is a thermometer used for

A thermometer is a device used for measuring temperature. It has two important elements: a temperature sensor and a means of converting that signal into a numerical value. Thermometers are widely used in various fields such as technology, industry, meteorology, medicine, and scientific research. They can be used to measure the internal temperature of objects, determine if icing conditions exist on roadways in cold weather climates, aid in cooking meat to a safe internal temperature, and achieve a specific water content in sugar for candy making. In the medical field, thermometers such as mercury-in-glass thermometers, infrared thermometers, pill thermometers, and liquid crystal thermometers are used to determine if individuals have a fever or are hypothermic. Various types of thermometers are available, including liquid thermometers, gas thermometers, digital thermometers, electrical-resistance thermometers, and thermocouples, each with its own specific applications and temperature measurement ranges.