Sonoluminescence is a fascinating, mysterious physical phenomenon, that combines the principles of light and sound. In the year 1934 H. Frenzel and H. Schultes discovered a luminous effect by ultrasonication of water.[1] The defining moment that leads to sonoluminescence is the emergence of a cavitation in the liquid (figure 1). The high frequency ultrasound leads … Continue reading What is the Cause of Sonoluminescence?