描述
- balance balls perfect present for physics lovers and desk decor. Newton’s cradle is a device that demonstrates conservation of momentum and energy using a series of swinging spheres.erfect blend between science and art. Based on Newton's first law of motion. Plastic base, metal ball
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balance balls perfect present for physics lovers and desk decor. Newton’s cradle is a device that demonstrates conservation of momentum and energy using a series of swinging spheres.erfect blend between science and art. Based on Newton's first law of motion. Plastic base, metal ball
