Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads)

Works perfectly

My son really loved this, it was one of his birthday gifts. It's stylish and delicate and looks nice on his desk.

Not top quality. But does what is supposed to do.

Best buy for my room in school, children love it

Flimsy feel, and even before removing the packaging we could see one of the bits of twine wasn’t stuck to the bar. We will be returning it.

As described

I’ve loved these things since I was a kid and to get this one with 7 balls instead of 5 brilliant and my kids love it too.

My nephew loves this. Good quality and size.

Very nice but beware of tangling nylon cords if used with too young of child. I recommend this for 8 yr old and up.

良い。届くのに少し時間はかかるがものはいい。

Alles gut.

Tener un péndulo de Newton era un deseo de mi hijo, y estas navidades ha sido la ocasión perfecta. Había muchos modelos a elegir, y todos tenían algunas malas críticas que nos hicieron dudar en cual coger. Pero éste, ha sido todo un acierto. No es que dure mucho rato el movimiento ,pero a los padres, ya nos va bien que así sea..

Pendule de Newton, conservation de la quantité de mouvement.