> When I was in high school, I'd see water running out of a faucet growing narrower, and wonder if I could figure out what determines that curve. I found it was rather easy to do. Out of curiosity, does anyone know the solution to this problem? I wouldn’t even know how to approach it. (I’m an undergraduate physics major; I know nothing about fluid dynamics, but from Feynmann’s description I suspect that isn’t necessa…
A column of water will first form into a cylinder and then break up into spherical droplets. It’s called the Plateau–Rayleigh instability.
https://en.m.wikipedia.org/wiki/Plateau–Rayleigh_instability