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 ...

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 ...

Scientists have known about terahertz waves for years. Their unique properties suggest that these waves could enable ...

small amplitude, low frequency → a quiet ... of the head of a foetus so that growth can be monitored. High frequency ultrasound waves can be used to detect objects in deep water and to measure ...

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.

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 barrier should be at least high enough to obscure the 'line of sight' between ... be severely reduced by temperature and wind gradients. Diffraction of a low frequency sound wave around a barrier.

Keysight Technologies, Inc. (NYSE: KEYS) and Ericsson establish a pre-6G radio access test setup with an Ericsson base ...

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 ...