We’ve figured out why bubbles make a ‘pop’ sound when they burst

By Harry Lampert

RICHARD BEECH PHOTOGRAPHY/science PHOTO LIBRARY

Every person loves the relaxing pop when a bubble bursts, but what precisely produces the sound? Adrien Bussonnière at Sorbonne College in Paris, France, and his colleagues recorded audio of bubbles popping and studied the forces fervent to search out out.

On a prime degree, sound is a stress wave. The air internal a bubble is below extra stress than the air delivery air it, as it’s compressed by the ground force of the bubble film – that is, till it bursts. “The forces utilized by the liquid soap film are …