In the earliest days of the medical profession, there was no device available to measure a patient's temperature. Patients were either too hot, normal, or too cold, depending upon the doctor's personal observation methods. It was not until nearly the...

A thermometer is an instrument used to measure temperature. Most modern thermometers tend to be a hollow tube of glass marked with a scale and filled with a liquid, either mercury or alcohol. The thermometer works because there is a constant ratio...

Thermometers are familiar devices used to measure the temperature of an object or a system. Thermometers use the principle of thermal equilibrium, also known as the zeroth law of thermodynamics to find the temperature of an object. Thermometers may be...

Science of measuring the temperature of a system or the ability of a system to transfer heat to another system. Temperature measurement is important to a wide range of activities, including manufacturing, scientific research, and...

A thermometer is a device that measures temperature or temperature gradient, using a variety of different principles. The word thermometer is derived from two smaller word fragments: thermo from the Greek for heat and meter from Greek, meaning to...