Surprise your friends with this clever Repetitive Motion Fidget. Everyone will love it! This cute, simple and modern design, will easily attract people's attention, it can relieve stress and relax the eyes when you are bored, it is also a toy that can make you feel relaxed and happy. Using the principles of dynamics and gravity it makes the metal ball toss and fall continuously. Not only does it demonstrate pendulum motion, but it helps demonstrate the laws of conservation of momentum and energy. This is a classic tabletop accessory that is dynamic art.
Price: £39.99