With its attractive metal finish, this Newton’s Cradle is a perfect desk top gift. Just pull back one or two of the metal balls and let them drop. The same number will swing up on the opposite side, with their clicking back and forth until they stop.

Along with its attractive presence, Newton’s Cradle demonstrates Newton’s three physical laws of motion which form the basis of classical mechanics. Newton's Laws ...

• First… Law of Inertia — body will remain at rest or in motion unless acted on by outside force.
• Second… Law of Acceleration — accelleration or change in motion is proportional to change in force.
• Third… Law of Conservation of Momentum — every action has an equal and opposite reaction.

Dimensions: 18cm long x 12cm wide x 20cm tall