Newton pendulum is a desktop demonstration device invented in 1960s, five same quality ball sling fixed and arranged closely to each other.Newton pendulum also called: Newton pendulum ball, momentum swing ball, ball, billiard, perpetual physical touch ball. The Newton's cradle was put forward by the French physicist Edme Mariotte in 1676, the first. When the ball is on the right side of the ball and the ball is in the back of the ball, the ball will be ejected, and only the left side of the ball will be ejected. The Newton's cradle was put forward by the French physicist Edme Mariotte in 1676. Brand new and high quality. Not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy. Often used as a toy to amuse people. Includes steel balls, plastic frames and base.Great gift for everyone. Product Description Dimension: Small :9*8*9cm 0.9 pounds Medium :13*11.2*13.5cm 1.1 pounds Large :18*12*18cm 1.9 pounds Package Included:1 x Balance Balls Desk Material: wooden base, stainless steel ball, fishing line
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