Enlarge / Two rings buckling under the pressure of a soap film. The top ring is a narrow band (compared to its diameter), so it buckles inward. The bottom ring has wide walls. It wrinkles out of plane as it collapses inward. (credit: Finn Box) I once had a PhD student who joined our research program thinking he was going to be studying a mixture of plasma physics and gas diffusion. To his surprise, he…
External feed Read More at the Source: https://arstechnica.com/?p=1676267