They found the larger the cavity between palms ... and that's the sound we hear," said first author Yicong Fu, doctoral student in the field of mechanical engineering. The researchers compared ...

Mechanical crystals, also known as phononic crystals, are materials that can control the propagation of vibrations or sound ... cavity's resonant enhancement to create an intense optical field ...

The cavity magnetron uses physical cavities and a magnetic field to create microwave energy. The frequency is determined by the size and shape of the cavities. While the cavity magnetron had ...