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 ...

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

Wavelength is the distance between each crest of the wave. Frequency is how many waves there are per second. The higher the frequency, the more quickly air particles vibrate and the higher the pitch.

NEW YORK (AP) — Scientists have detected cosmic waves that sound like birds chirping in ... their sharp notes mimic high-pitched bird calls. Researchers have captured such sounds in space ...

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

The approach uses high-frequency sound waves, usually in the megahertz (radiofrequency ... of an acoustic-optic grating, such as its pitch and strength, can be controlled by altering the frequency ...