sec. is made to oscillate up to its 54th harmonic, and at all stages it could be employed to maintain stationary waves in a column of water in the usual manner. Diffraction patterns at almost all ...

This 2023 astronaut photo shows a pair ... miles (16 kilometers) of water. Wave clouds are rare but can be found more often over large bodies of water because the air there is more stable, which ...

The index of refraction of air increases with density, so the standing wave acts as a Bragg grating that can deflect light using optical diffraction. While this technique is used to create gratings in ...

By showing that a simple Coke can array can focus sound waves beyond the diffraction limit, the study could have applications in providing energy for tiny electromechanical devices, among other uses.