Switch Pitch Ball: this spherical assembly changes color by turning inside out when tossed into the air. Advertisements for this toy incorre
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Centripetal Kinetic Toy: seven rolling steel balls hug to the inside of the acrylic sphere given sufficient velocity. Here the balls are lau
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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 scu
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