The Geek Culture brand pays homage to uber Geek, Sir Isaac Newton with the Newton's Cradle - an historical device, which demonstrates the conservation of momentum and energy, which are apparent in Newton's Three Laws Of Motion. Simply pull back and release one of the silver balls and allow it to swing. This creates a force that urges other balls forward through hypnotic motion. It's oddly soothing and yes, it's a stress buster. Suitable for children from the age of 8 Crafted from chrome, nylon and timber Includes 5 chrome balls suspended by nylon from a chrome frame Swing the balls in a pendulum motion Demonstrates the principles of gravity, action and reaction Named after the famous scientist, Sir Isaac Newton Iconic, intriguing and hypnotic gadget Ideal for a home office or in a sitting room Dimensions: 15cm (l) x 18cm (h) x 13cm(w).