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 ...

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 ...

The science behind the distinct "pop and slosh" sound when opening a swing-top bottle of beer has been revealed. German researchers used a high-speed camera to capture exactly what occurs when one of ...