Physics in an Ornament
This is a luxury version of the Newton's Cradle device, which not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.

The clacking of the steel balls will keep you entertained throughout the day and is sure to bring fun into the office. It also makes a great modern gift.
Specifications:
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Material: steel (balls) and non-toxic plastic (base)
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Dimensions: 9 x 7.5 x 9.5 cm (3.5 x 2.95 x 3.75 in)
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Weight: 95g (0.20lb)
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