A team of Caltech researchers is proposing a radical new technique for killing cancer cells using low-intensity ultrasound waves. The preliminary research is still at an incredibly early stage but ...

A specular reflection of X-rays may, however, also result from stratifications of density which are not static but dynamic in character, and which may be considered as equivalent to stationary ...

Metamaterials researchers have created a thin plastic structure with geometric details allowing it to control the redirection and reflection of sound waves with almost perfect efficiency.

Every piece of glass has a natural resonant frequency—the speed at which it will vibrate if disturbed by a stimulus, such as a sound wave—as does every other material on Earth.

Researchers have revealed how high-frequency sound waves can be used to build new materials, make smart nanoparticles and even deliver drugs to the lungs for painless, needle-free vaccinations.

'Meta-mirror' reflects sound waves in any direction New device perfectly controls the angle of reflection of sound waves Date: March 7, 2019 Source: Duke University Summary: Researchers have ...

The wave that creates the sound of a standard whistle oscillates at a relatively high frequency, so the resulting sound is very high-pitched.

Absorbing low frequency sound is a big job, or at least, a job for big things. Acoustic absorption systems require big resonant cavities with large amounts of heavy damping material and ...

There has long been a mystery when calculating how an incoming light wave scatters off an object and becomes a modified, ...

A new type of extinguisher that uses sound waves to put out fires has been built by two engineering students in the US. Both chemical- and water-free, the invention offers a relatively non-destructive ...