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 ...

A drum with a very tight skin makes this sort of wave. It's what we call a high pitched wave. And some of the waves are long, loose rolling waves, like this. A drum with a loose skin makes this ...

Scientists have detected cosmic waves that sound like chirping birds in an unexpected place. These bursts of plasma, called ...

Scientists have recently detected cosmic waves that mimic the sound of birds chirping, coming from an unexpected source in ...

High frequency hearing loss causes problems with hearing high-pitched sounds ... is a measure of the number of vibrations a sound wave makes per second. For example, a sound measured at 4,000 ...