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 ...

Scientists have performed the most accurate measurement yet of the Boltzmann constant. While the impact of such an achievement is not immediately obvious, the measurement could revolutionize the way ...

Hot and cold are measured using a numeric scale called temperature. Temperature scales are how we communicate about the weather, measure safety and comfort and explain the physical world. Using ...

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 ...

Nothing is colder than absolute zero, so it seems nonsensical to talk about negative temperature – but now there is a substance that must have just that. The revelation could shake up our ideas about ...

Richard B Rood receives funding from government and foundation research grants. He writes a climate-change blog for Wunderground.com If you’re younger than 30, you’ve never experienced a month in ...

Photothermal therapy (PTT) at present, following the temperature definition for conventional thermal therapy, usually keeps the temperature of lesions at 42–45 °C or even higher. Such high temperature ...