ZCtron Balance Balls Toy, Newton's Cradle Balance Steel Balls Physics Science Pendulum Desktop Ornaments Toy

Excellent educational science gadget

Not only demonstrates a pendulum, but also demonstrates the laws of conservation of momentum and energy

Great for home ornament, desk or office table decoration accessories , etc

Excellent educational and scientific gadget, own your own piece of science history and explore the important values of physics

Shoot one or more balancing balls towards the back, release them and the same number of balls will swing to the opposite side

Scientific toy

When you feel tired of studying and working, you can stir the balls to hear the rattle