Newton's pendulum, large Newton's cradle 18 cm pendulum Newton's balls Newton's swing Science game Office desk decoration Industrial Heaters suitable for conventional 3 1/2

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Newton's pendulum, large Newton's cradle 18 cm pendulum Newton's balls Newton's swing Science game Office desk decoration Industrial Heaters suitable for conventional 3 1/2High quality materials Newton's cradle is made of high quality metal steel and solid wood base and nylon. It is more durable and not easy to break. It is shiny, anti rust and not easy to rust. It can be used for a long timeEducational and scientific games Newton Pendulum According to the laws of conservation of momentum and conservation of energy, the metal ball will not swing indefinitely due to resistance. Usually, under normal circumstances, the