Watch Thermometer Video

A thermometer is a device that measures temperature or temperature gradient using a variety of different principles. A thermometer has two important elements: the temperature sensor in which some physical change occurs with temperature, plus some means of converting this physical change into a numerical value. There are many types and many uses for thermometers, as detailed below in sections...  MORE

A thermometer is a device that measures temperature or temperature gradient using a variety of different principles. A thermometer has two important elements: the temperature sensor in which some physical change occurs with temperature, plus some means of converting this physical change into a numerical value. There are many types and many uses for thermometers, as detailed below in sections of this article. LESS