Researchers have for the first time used an apparatus that relies on the "noise" of jiggling electrons to make highly accurate measurements of the Boltzmann constant, an important value for many ...

These results will contribute to a worldwide effort to redefine the kelvin, the international unit of temperature, and could lead to better thermometers for industry. Accurate temperature measurement ...

Physicists in the US have developed a technique that may help to make a more accurate measurement of the Boltzmann constant, a fundamental value that relates the kinetic energy of a group of particles ...

The world’s measurement system will be based on updated values for four fundamental constants of nature. A revised SI ( the International System of Units ) based fully on accurate values of these ...

Michael de Podesta recounts the six-year experiment that has yielded the most accurate temperature measurement ever made – a result that is expected to help redefine the kelvin Mirror perfection A ...

Physicists in France have used laser spectroscopy to make the first direct measurement of the Boltzmann constant. The new technique, which involves observing how light is absorbed by ammonia molecules ...

In an upcoming refresh, particle physics will define units of measurement such as the meter, the kilogram and the second. While America remains obstinate about using Imperial units such as miles, ...