Sonoluminescence is a phenomenon where ultrasound waves in a liquid create tiny bubbles that collapse violently, emitting brief flashes of light. When a powerful acoustic wave moves through a liquid, it generates cavities (or bubbles) through a process called cavitation. These bubbles grow and then collapse rapidly, generating temperatures as high as 10,000°C and even more. At that moment, electrons are stripped from atoms, forming a plasma, and (from that plasma) a burst of light is emitted. Th