3X (Newton bölcső kiegyensúlyozó labdafizikai tudományos szórakoztató asztali játéktartozéka J4F6)

3X(Newton`s Cradle Balance Ball Physics Science Fun Desk Toy Accessory J4F6)

3X(Brand new and high quality.
Not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.
Friction and damping effects are also observed.
Often used as a toy to amuse people.
Includes steel balls, plastic frames and base.Product Description
Great gift for everyone
Masse:？18cm？x？11？cm？x14.5？cm
Material: plastic, steel
Package Included:1 x Balance Balls Desk Toy)

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