For the first time, physicists have captured direct images of 'second sound,' the movement of heat sloshing back and forth within a superfluid. The results will expand scientists' understanding of ...

Determining the acoustics and physics at play behind the liquid sloshing and popping sounds that occur while opening a swing-top bottle of beer WASHINGTON, March 18, 2025 — In a fun experiment, Max ...

In most materials, heat prefers to scatter. If left alone, a hotspot will gradually fade as it warms its surroundings. But in rare states of matter, heat can behave as a wave, moving back and forth ...