Every child learns to blow soap bubbles, but it’s rare that we have a chance to look inside them and see the flow there. In this poster, researchers seed a growing bubble with olive oil droplets, then illuminate them with a laser. This provides a glimpse inside the bubble. In the center, we see the incoming jet dividing the bubble in two and forming two large, counter-rotating vortices. Along the left side, snapshots show the bubble’s interior as it grows and, eventually, pops. (Image credit: S. Rau et al.)
Inside a Soap Bubble
