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Newton's Cradle 7" Black
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$17
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Newton's Cradle 7" Black
Description Newton's Cradle is a classic! Also known as balance balls, these steel balls keep you entertained throughout the day. Pull back one or more of the balls and let them drop down. The same number of balls will swing up on the opposite side and the clicking will go back and forth until it stops... a soothing experience you'll enjoy. Newton's Cradle makes a great desktop gift. See the In Action Video! Click the tab below.
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$16
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Known as motion balance balls, these steel balls keep you entertained all day long. Newton's Cradle makes a great desktop executive gift. Draw back one or more of the balls and release. Newton's Cradle is a classic! Every action has an equal and opposite reaction, science demonstrated simple and clearly. The exact number of balls will sway up on the opposite side and the motion will repeat back and forth until it stops... a restful experience you'll enjoy.
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(US)
