Balance Balls

Made of steel material, bright, preservative and not easy to rusty.

Not only demonstrates a pendulum, but also shows the Laws about the conservation of Momentum and Energy.

Perfect for decorating in the office, home and other indoor places.

It is a very funny decompression toy that a ball can be used to hit other balls and swing.

Can be a funny gift to your friends, family and children.

Swing one steel marble back, let it go, and watch as kinetic energy causes the one on the opposite side to swing the same distance! If you're feeling saucy one day, try swinging two or three at once- just don't pass out from the excitement!

This desktop display model is a version of Newton's cradle, a device that demonstrates the conservation of momentum and energy via a series of identically sized swinging spheres. When one ball on the end is lifted and released, the resulting force travels through the line and pushes the last ball upward. Because it uses Newton's Laws, it was named after Sir Isaac Newton, an English physicist, mathematician and astronomer, but was actually invented in 1967 by an English actor