Newton cradle balance balls with mirror not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy;Material: Plastic + metal balls + Fishing Line. Demension:15.5x8.5x11.5cm/6.10x3.35x4.53inch;Use it to waste time, relieve stress, tune out boring coworkers, office desk toys physic ball, or schooling youngsters in physics;Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physic;Something gets everyone's affection and makes a lively office decoration or executive gift, lift one of the 5 steel balls at either end and let it swing back.

• Willcomes White Classic Newtons Cradle Balance Balls Physics Science Art in Motion Fun Desk Toy Accessory
• White

Willcomes White Classic Newtons Cradle Balance Balls Physics Science Art in Motion Fun Desk Toy AccessoryWillcomes