Lightahead Classic Newton Cradle Balance Balls Kinetic Art Balancing Toy in Perpetual Motion Decoration for Home & Office
- Classic Cradle Balance Balls Science Psychology Puzzle Desk Toy. Impact a ball and the balls will impact each other.
- Exemplifies Newton's principle that, "action and reaction are equal and opposite."
- Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics.
- It is an amazing product at this price, it can be a great gift to your families or friends. It also can be used for education purpose.
- Material Plastic and iron