Newton Cradle Balance Ball - Pendulum Balance Balls Desk Toy Swinging Magnetic Ball Educational Science Office Decoration Stress Relief Gift

【High Quality Material】: The Newton cradle balance ball is made of high quality steel material, bright, anti-corrosive and not easy to rust, which can be used for a long time. 【Shows the Laws】: This pendulum balance ball not only demonstrates a pendulum, but also conservation of momentum and energy through a series of rotating spheres of the same size, the metal ball will not swing forever due to resistance. 【Multi-Purpose】: The balance ball desk toy is a very interesting decompression newton ball that can hit other balls with one ball and swing. With various funny way of playing, kids are very easy to be attracted by newton's cradle. 【Stress Relief】: This swinging magnetic ball is suitable for children and adults, ideal for eliminating boring time and stress relief, which is a desk decoration for an office or home. When a ball at the end is lifted and released, the resultant force passes through the line and pushes the last ball outward. 【Perfect Choice】: Our science office decoration can explain your child's physical knowledge and Newton's story, and it can also help you explore the mysteries of natural science, which is an interesting gift for your friends, family and children., Manufacturer: OKBY