physicsfun on Instagram: "Chaotic Fidget: a double pendulum spinner- chaos in the palm of your hand! This miniature double pendulum is made from stainless steel, which provides high mass so one can feel the unbalanced center of gravity shift about, and the bearings allow for smooth and sustained motion. Slow motion reveals the intricacies of the chaotic motion, characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramaticall