These effects are particularly important where sound is propagating ... can be severely reduced by temperature and wind gradients. Diffraction of a low frequency sound wave around a barrier. Note that ...

A fibrous composite foam employs the triboelectric effect and in situ electrical energy dissipation to absorb low-frequency ...

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 ...

Although sound travels quite fast, it is still possible to calculate its speed in air. To do this, the time it takes a sound to travel a measured distance must be recorded. Either the distance ...

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 ...