Newton's cradle
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See also: Newton's Cradle
English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Newtons_cradle_animation_book_2.gif/200px-Newtons_cradle_animation_book_2.gif)
Alternative forms
[edit]Etymology
[edit]Named after Isaac Newton.
Noun
[edit]Newton's cradle (plural Newton's cradles)
- A device that demonstrates conservation of momentum and energy via a series of swinging spheres. When a sphere at one end is lifted and released, the resulting force travels through the line and pushes the opposite sphere upward, repeating the process as it swings back down.