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Zen Ball Art (Ultimate Ball, Snub Ball, Zen Magnets)

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The video shows four double-thickness hollow spheres that can be made with Zen Magnets, including the ultimate ball with 1860 magnets and snub balls with 2280, 3360, and 4500 magnets. Shown narration-free are the main steps in the constructions, one destruction (at the end), close-up video, and tossing of the larger snub balls from one hand to the other.

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Richard Garriott Space Video Blog: Conservation of Momentum

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The law of conservation of mass - Todd Ramsey

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Teaching with style; Mechanical Energy Conservation