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.

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

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