Hottest temperature ever measured is a negative one
Ultracold gas sets record on the kelvin scale
By Andrew Grant, 17:44 PM January 4, 2013
Coaxing a gas to a negative temperature on the kelvin scale has produced, paradoxically, the hottest temperature ever measured. The study, published in the Jan. 4 Science, will help physicists learn about quantum phenomena and perhaps even the strange form of energy that dominates the universe.
A negative kelvin temperature indicates that particles at high energies outnumber those at low energies.
“We are used to positive temperatures,” says Achim Rosch, a physicist at the University of Co...
Source URL: https://www.sciencenews.org/article/hottest-temperature-ever-measured-negative-one