Researchers at the University of Twente have solved a long-standing problem: trapping optically-generated sound waves in a ...

Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens.

Thousands of marine species from microscopic zooplankton to the largest cetaceans rely on sound for survival and many have evolved unique oral and aural adaptations. Understanding them better could ...

Light is a type of electromagnetic radiation that can be detected by the eye. It travels as a transverse wave. Unlike a sound waves, light waves do not need a medium to pass through, they can ...

The legacy of sleep sounds, white noise has lulled people to sleep for ages. Because white noise encompasses all of the ...

The innovative sound display, which seamlessly translates auditory information into optical signals, addresses the challenges ...

So-called Rayleigh–Bloch waves can release enormous amount of energy that can damage technical systems under certain ...

Let's go back to those sound waves from before. See, sound waves, like light waves, have peaks and valleys. Noise-cancelling headphones have their own built-in microphone. And when the headphone's ...