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Ultracold matter

Ultracold matter

Physicists take the temperature of second sound

13 Feb 2024
Image showing hot pink and orange arrows representing the flow of heat through a grid of atom-like spheres
Wave as you go by: The term "second sound" refers to the movement of heat through a superfluid. (Courtesy: Jose-Luis Olivares, MIT)
A new technique for monitoring “second sound” – a bizarre type of heat wave that occurs in sup

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Tim Wogan is a science writer based in the US
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