zzNewton is a screensaver that duplicates Newton's cradle with thirty different color options.
Newton's cradle is a device that demonstrates conservation of momentum and energy using a series of swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres, transmitting a force through the stationary spheres that pushes the last sphere upward. The previous sphere swings back and hits the still nearly stationary spheres, repeating the effect in the opposite direction.
The device is named after 17th-century English scientist Sir Isaac Newton. It is also known as Newton's pendulum, Newton's balls, Newton's rocker, or executive ball clicker (since the device makes a click each time the balls collide, which they repeatedly do in a steady rhythm).
zzNewton includes the option of thirty different colors.
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