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Newton's Cradle Art in Motion, 7 1/4-Inch Balance Balls - Black Wooden Base
mpn: 2506, ean: 8850273118870,
Newton's Cradle makes a great desktop gift. These swinging balls will keep you occupied for hours at work. Newton's Cradle is a clever device that not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.Newton...
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