Bubble Acoustics: A quick introduction
Channel: RichardManasseh
Date: 2020-08-08

What makes the sound of surf? You can see - and hear - with an experiment in a glass of water. Sounds we hear every day, from the plink of a raindrop to the roar of the surf, are due to the formation of bubbles. An equation derived by Minnaert in 1933 lets us predict the pitch of the natural music of bubbles; put in the radius in metres and get the frequency in Hertz. This physics has applications as diverse as predicting climate change and treating diseases with ultrasound.