Vladan Vuletić

Jan. 04, 2013

Negative Temperatures That Are Hotter Than the Sun

Scientists have cooled potassium gas to one billionth of a degree below absolute zero. But in the quantum world, that's actually 'hotter' than the Sun. How is that possible?

cold, absolute zero, temperature, physics, statistics, particles, quantum, kelvin

AVAILABLE IN ITUNES

Michael Pollan Talks Plants and Food

view more

FEATURED PLAYLIST

Happy National Moth Week!

BOOKS BY OUR GUESTS

Mystery Box

The Myth of the Woolly Bear

\tLegend holds that the length of a woolly bear caterpillar’s color bands can be used to forecast how severe the winter weather will be. The myth dates back to colonial American folklore but was popularized by a 1948 study. SciFri finds out if there’s any truth to the lore, and what the caterpillar’s fuzzy bristles are really used for.

Science Friday® is produced by the Science Friday Initiative, a 501(c)(3) nonprofit organization.

Science Friday® and SciFri® are registered service marks of Science Friday, Inc. Site design by Pentagram; engineering by Mediapolis.

 

topics