The human ear detects sound. Sound waves enter the ear canal and cause the eardrum to vibrate. Three small bones transmit these vibrations to the cochlea. These bones transmit most efficiently ...

Physicists Changlong Zhu, Claudiu Genes, and Birgit Stiller of the Max Planck Institute for the Science of Light in Germany ...

The process is very similar to ultrasound imaging, however the sound waves used are within normal hearing range, and they are used to identify objects rather than internal structures. This ...

In the future, this method could also be used in technical applications with electromagnetic waves. Water, light and sound ...

By carefully designing the structure and materials of the photonic crystal, researchers can control the flow of light and create optical waveguides, filters, and cavities. Similarly, phononic crystals ...

Here we use photonics, or light energy, to produce the sound wave. This approach has multiple advantages, chief of which is ...

While not quite at the Bang and Olufsen level, the sound quality of the speaker is reasonable, with only a touch of muddiness coming through when the volume gets cranked up. Like the light waves ...