ของเล่นลูกตุ้มเหล็กนิวตันวิทยาศาสตร์เครื่องประดับตั้งโต๊ะ

Features:
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 one 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 children toy.

Specification:
 
Condition: 100% brand new
Material: Paint base + solid pendulum + boutique fishing line
Color: Sliver
Size: 18.5 x 12 x 20cm / 7.28 x 4.72 x 7.87 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.

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