The frequency of ultrasound is therefore greater than 20,000 hertz. Ultrasound, like audible sounds, is transmitted by means of longitudinal waves. Ultrasound is used in medicine to break up ...

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 ...

The frequency of this signal is many times greater ... causes the radio speaker's diaphragm to vibrate, which creates sound waves. A sound wave equivalent to the singer's voice radiates from ...

They sent a sound wave with a frequency of around 800 Hertz (roughly the high g of a soprano) through the first waveguide and ...

For the first time, scientists have confirmed a 50-year-old theory about wave amplification using electromagnetic waves.

Billionaire Brain Wave is a theta-based sound frequency that is said to target the hippocampus and help people attract ...