The classic Newton’s Cradle!

Named after Sir Isaac Newton, Newton’s Cradle is a device that demonstrates conservation of momentum and energy via a series of swinging spheres. When ball(s) from one end is lifted and released, the resulting force travels through the line and pushes an equal number of balls upward at the other end. Simply touch, drag and release to set the cradle in motion. The steady rhythmic sound of the ball bearings will produce a soothing and meditative experience.