Usually, when something gets warmed up, heat tends to spread outward before eventually dissipating. But things are a little different in the world of superfluid quantum gas. For the first time, MIT ...

In a breakthrough that challenges conventional physics, scientists have confirmed the existence of “second sound” — a phenomenon where heat travels as a wave rather than dispersing slowly, as it does ...

Scientists have captured direct images of heat behaving like sound — an elusive phenomenon called 'second sound' — for the very first time. Imaged within an exotic superfluid state of cold lithium-6 ...