Pendulum s - Physics Theories

Magnetic Chaotic Pendulum: this beautifully designed “perpetual pendulum” has been in my collection since 1990. The ufo shaped bob has a magnet embedded in it and the base has a battery and simple coil circuit that gives the bob a tiny push each time it swings through the center. An array of 5 permanent magnets are also hidden in the wood base (wait for reveal with magnetic viewing film) and these magnets produce the chaotic motion- not random, but very sensitive to slight differences in initial

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Physical Pendulum Kinetic Chaos: two lucite spheres are set to rotate freely along three perpendicular axes in this vintage 1974 kinetic sculpture by John Anderson. An interesting design feature is that one horizontal axis is offset from the other two leading to more intricate motions. Chaotic motion is characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time the masses are set into moti