Heat is not supposed to behave like this. In everyday life, warmth seeps and diffuses, spreading from hot to cold in a slow, smearing process that never looks anything like a crisp sound wave. Yet ...

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Sound is usually treated as the most familiar of physical phenomena, the background noise of daily life rather than a ...

A quiet revolution is taking shape in the world of physics, and it doesn’t rely on exotic particles or massive particle colliders. Instead, it begins with something much more familiar—sound.

“Second sound is the hallmark of superfluidity, but in ultracold gases so far you could only see it in this faint reflection ...

Cancer is one of the leading causes of death in the U.S., second only to heart disease. But a new cancer treatment method ...

Helium leaks are hard to detect, since it is odorless, colorless, tasteless, and does not react with other chemical ...