The most accurate thermometer in the known universe looks nothing like a thermometer. It is a copper vessel the size of a large cantaloupe, filled with ultrapure argon gas and studded with microphones ...

What is temperature? This question comes up quite a bit—especially in introductory science courses. The most common answer is something like this: Temperature is a measure of the average kinetic ...

Have you ever placed a thermometer under your tongue and wondered how that tiny device knows if you have a fever? Or checked the weather and thought about how scientists measure temperature so ...

A new measurement of a fundamental physical constant marks a turning point in the quest to craft a perfect temperature scale The most accurate thermometer in the known universe sits in a rather ...