A stream of very viscous syrup falls from a nozzle onto a moving belt. Initially, the belt is moving so fast that the thread is just pulled out straight. As the speed of the belt is reduced, the thread first bifurcates to a meandering state, and then to a "figure eight" state. Finally, the thread falls into a coiling motion similar to what it would do on a non-moving surface.
Golden Rule (Jewish & Confusion expression) ”Do not do to others what you would not like them to do to you.”
Look into your own heart, discover what it is that gives you pain, and then refuse, under any circumstance what so ever, to inflect this plain on anybody else. -- Karen Armstrong
Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion.
