Metal Balance Swinging Physics Science Pendulum Balls Desk Motion Toy for Office Physics Teacher Decorations(Black Bottom)

【Educational Significance】: Newton Pendulum is a perfect school education gadget, which can children to understand meaning of energy conservation, as toys for family activities, to your child's creativity

【High Quality Material】: Each Newtons balance ball has been accurately measured, weight is uniform and consistent, and uniquely selected base and ball are made of high quality materials, bring you a good swinging experience

【Long Swing Time】: Classic design, due to the resistance of air and friction, the balance ball can last 15‑20 seconds and it lats longer time. Multiple ways of playing: For example, one ball at one end hits neighbor, the ball at the other end hits air, while ball in the middle stays still

【Classic Science Toy】: Newton is an eternal classic desktop science "Toy", also known as Stadium Pendulum, Newton ; is the perfect combination of science and art that can explain children's awareness of Newton's physical knowledge of Newtonian physical knowledge