We Normally Sell These For $37.95 A Piece And Today Only You Can Get One For 50% OFF And Only Pay $18.95 With Free Shipping
2018 Light Up Newton's Cradle, A Perfect Gift For Physical Lovers
Due to a large demand in orders, please allow 2 - 4 weeks for delivery.
100% brand new and high quality.
Newton's cradle, named after Isaac Newton, is a device that demonstrates conservation of momentum and energy via a series of swinging balls.
When one on the end is lifted and released, the resulting force travels through the line and pushes the last one upward; or pushes one side, all balls will swing together in a line. The device is also known as an executive ball clicker, Newton's balls, or Newton's pendulum.
Install batteries, it will light on the base board, and the balls will look colorful and beautiful.
Great for home ornament, study or office desk table decor accessories, etc. Also good for birthday gift and kids toy