Waves close wavesVibrations that transfer energy from place to place without the transference of matter. , including sound and light, can be reflected at the boundary between two different materials.

Sound is the vibrations of an object. It is transmitted in the form of waves with alternate increase and decrease in pressure. A vibrating object compresses the surrounding air molecules making them ...

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.

Waves close wavesVibrations that transfer energy from place to place without the transference of matter. - including sound and light - can be reflected at the boundary between two different materials.

Researchers have constructed a 'meta-mirror' device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking directly into a mirror ...