So-called Rayleigh–Bloch waves can release enormous amount of energy that can damage technical systems under certain circumstances. They only exist below a precisely defined cut-off frequency; above ...

That means that it uses both low and high-frequency radio waves to work. This is a good thing. Lower frequency waves can travel further distances, meaning that one cell tower could cover a few ...

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 ...

Researchers developed a low-cost, scalable terahertz amplifier that could be used to make antenna arrays that can steer and focus high-frequency terahertz waves, for applications like high-resolution ...

Strangely enough, however, there are isolated high frequencies at which ... we know that only vibrations with a low frequency can generate Rayleigh–Bloch waves," says Peter.