Physicist Adrien Bussonnière and his colleagues recently measured the sounds that occur when a soap bubble pops. Using an array of microphones, scientists have examined the physics behind the sound of the bubble’s burst. They observed that, initially, crack in the soapy layer begins the bubble burst. As soon as the crack expands it changes the forces within the bubble, the forces create the sounds that can be detected by microphones. As the soapy layer withdraws, it changes the surface tension that affects the forces and sound. Scientists used high-speed video to analyze this phenomenon and successfully proved that how the properties of sound can reveal the changing forces that produce certain sounds.
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