توضیحات:

Newton's cradle is a very famous device invented by
Sir Isaac Newtonas as a demonstrates conservation of
momentum and energy via a series of swinging spheres,
But after all it's the most amazing experience you can have watching the balls in motion ,
try the many combinations of moving the balls
Try it now with your friends ,
Or use it as unusual funny desk clock,
it's a crazy crazy crazy amazing experience.