Educational Toy, Excellent educational science gadget. Not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy. Friction and damping effects are also observed.
Relive Stress, When feeling tired of studying and working, you can stir balls to hear the clinking sound to ease.
Stimulate Scientific Interest, Excellent educational & science gadgets, own your very own piece of scientific history and explore significant values of physics.
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