eBay

Description:
This device demonstrates demonstrates conservation of momentum and energy via a series of swinging balls. Pull back or more of the balance balls, release them and the same number of balls will swing up on the opposite side.

Features:

Friction and damping effects are also observed.
Excellent educational science gadget. Not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy.
Science toy. When feeling tired of studying and working, you can stir balls to hear the clinking sound to ease.
Excellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics.
Pull back or more of the balance balls, release them and the same number of balls will swing up on the opposite side.
Great for home ornament, study or office desk table decor accessories, etc. Also good for birthday gift and kids toy.

Specification:
Condition: 100% brand new
Material: Plastic + Iron
Color: Sliver
Size: 9.2 x 7.5 x 9cm / 3.62 x 2.95 x 3.54 inch(appr.)

Package Included:
1 x Balance Balls Toy

Note:
1. Please allow 1-2 cm error due to manual measurement and make sure you do not mind before ordering.
2. Please understand that colors may exist chromatic aberration as the different placement of pictures.

1. Our listing price includes the value of goods,packaging cost,and export taxes,not including international duties.
2. duties,taxes,and charges are not included in the item price or shipping fee.
3. The duties are buyers' responsibility.Please check with your country's customs office determine what these additional costs will be prior to your purchase.
4. All disputes arising from the duties will be submitted to ebay for solution.

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On Apr 2, 2024 at 08:54:27 PDT, seller added the following information:

On May 5, 2024 at 21:36:13 PDT, seller added the following information: