Square Style Newton's Cradle Steel Balance Ball Physics / Science Fun Small

Description

Product Features:

Newton's cradle balance balls
Known as motion balance balls, these steel balls keep you entertained all day long
Newton's cradle makes a great desktop executive gift
Draw back one or more of the balls and release
Every action has an equal and opposite reaction, science demonstrated simple and clearly
The exact number of balls will sway up on the opposite side and the motion will repeat back and forth until it stops...
A restful experience you'll enjoy

Specifications:

• Material: wood + alloy
• Color: as shown in the picture
• Package size: 3 x 3.5 inches