RICHARD BEECH PHOTOGRAPHY/SCIENCE PHOTO LIBRARY
Everyone loves the satisfying “pop” noise when a bubble bursts, but what exactly produces the sound? Adrien Bussonnière at Sorbonne University in Paris, France and his colleagues recorded the audio of bubbles popping and studied the forces involved to find out.
On a fundamental level, sound is a pressure wave. The air inside a bubble is under more pressure than the air outside, as it is compressed by the surface tension of the bubble film – until it bursts. “The forces applied by the liquid soap film are not …
source: newscientist.com