Uncovering liquid foam's bubbly acoustics
Thursday, October 17, 2013 - 08:30
in Physics & Chemistry
Liquid foams fascinate toddlers singing in a bubble bath. Physicists, too, have an interest in their acoustical properties. Borrowing from both porous material and foam science, scientists studied liquid foams. They used an impedance tube to measure the velocity and attenuation of acoustic waves in liquid foams in a broad frequency range.