Neat, hypnotic 3-min videoslap of Sachimo Kodama’s moving sculpture, “Morpho Towers–Two Standing Spirals”.
Essentially, it’s a pair of screw-shaped electromagnets set into a tray of ferrofluid (colloidal liquid magnet). The magnets’ power fluctuates in time to the music, creating spikes in the ferrofluid as different levels of magnetization cause the fluid to move up and down the helical iron surface. It’s made of science, neat!
Thanks to JP for the tip.