Newtons Cradle Desk Toy, Pendulum Balls Swing, Metal Ball Balance with Plastic Frame Swinging Balls Pendulum, 5 Balls Pendulum Wave Toy, Gift Office Desk Gadgets Physics Science(white)

• Newton's Cradle Balance Balls Science: Excellent educational science gadget. Not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy
• Science Toy: When feeling tired of studying and working, you can stir balls to hear the clinking sound to ease
• Newtons Cradle Desk Toy: Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics
• Perfect Gift: The pendulum balls swing is great for home ornament, study or office desk table decor accessories, etc. Also good for birthday gift and kids toy
• High-quality Material: The frame is made of plastic with piano coating, lightweight, exquisite and sturdy

Description: This pendulum ball is a scientific toy according to the principle of conservation of momentum. The ball can swing about 15s due to air friction. You can put it at desktop for relaxation and aspiration. It is also an educational toy for kids. Features: The frame is made of plastic with piano coating, lightweight, exquisite and sturdy. Nylon string is tough and flexible, which is not easy to break and can ensure uniform force. Solid metal ball can swing about 15s considering air friction. A physics toy for both adults and children. Great home or office desktop ornament to release pressure and stimulate aspiration. Specifications: Condition: 100% Brand New Material: Plastic Frame + Metal Ball Color: White, Black (Optional) Ball Diameter: approx. 1.6cm / 0.63in Size: approx. 16*11.6*8.7cm / 6.30*4.57*3.43in Weight: approx. 310g Package Included: 1 x Pendulum Ball Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.