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(physics) The emission of short bursts of light from imploding bubbles in a liquid when excited by sound.

Single-bubble sonoluminescence – a single, cavitating bubble

(physics) The emission of short bursts of light from imploding bubbles in a liquid when excited by sound.

Long exposure image of MBSL created by a high-intensity ultrasonic horn immersed in a beaker of liquid

(physics) The emission of short bursts of light from imploding bubbles in a liquid when excited by sound.

From left to right: apparition of bubble, slow expansion, quick and sudden contraction, emission of light