A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a large amplitude, a high pitched sound has a high frequency. Musicians and ...

Perhaps the most iconic instrument in modern rock is the guitar. It's really just a bunch of strings stretched across a board, which you can strum to make awesome tunes, thanks to the physics of waves ...

Illustration of gravitational waves produced by a newly formed black hole. (Courtesy: NASA) Gravity sits at the heart of some of the most important open problems in astrophysics, cosmology and ...