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About the productGravity At Work See before your eyes as the Newton Balls transfer fall and transfer weight across the gadget. Drop one ball or two balls. You can see the energy transfer in such an astounding way! Office Desk Decor Show some character and express your love for science and physics with this decorating your office space. Can be meditative and fun to watch also! Educational & Classy Experience the visual display of momentum.

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Description Ces boules de verre sont écologiques, non toxiques et peuvent être utilisées longtemps. Excellent gadget scientifiques éducatifs. Non

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