This seemingly simple device, demonstrates some of the fundamental laws of physics, while also providing hypnotizing fun that will amuse you for hours at home, or on your desk. Great for stress relief and makes a wonderful gift!
This demonstrates the principles of Newton's third law: every action has an equal and opposite reaction. When one end of the metal spheres is lifted and released, it strikes the remaining stationary spheres and transmits the force that pushes an equal number of spheres on the other end.
WARNING: CHOKING HAZARD -- Small parts. Not for children under 3 yrs.