Lrsnine Funny Balance Swinging Magnetic Balls Newton's Cradle Steel Ball for Office Physics Teacher Toys Red Base
Brand: Lrsnine

Novelty Which combines with Art and science And Also Known As Balance Balls, Newton's Pendulum, Newton's Balls Place it on your desk, by your bed, or anywhere you want, and you'll always have elegance, entertainment, and science whenever you need them Quality and Durability Guaranteed!

Made of high quality steel material and plastic base. This is the small style one.
It is a very funny decompression toy that a ball can be used to hit other balls and swing.
Apply to psychology, teaching tools and furnishings. Frequency swing keeps you in a calm state.
Not only demonstrates a pendulum, but also shows the laws about conservation of momentum and energy.
Perfect for decorating in the office, home and other indoor places.