LanttAotte Desk Ball Newtons Cradle Metal Pendulum Steel Balance Ball for Physics Science Educationa

Descrição do Produto

• 1.This newton's cradle is made of high-quality electroplated steel ball and plastic base
• 2.The balance balls continue in perpetual motion for only 15-25 seconds due to the resistance of the air and friction
• 3. Ideal for experience the fun of mechanics in the process of playing this fun gadget.
• 4. Apply to psychology, teaching tools and furnishings. Frequency swing keeps you in a calm stat.
• 5. This exquisite decoration that can be a ideal birthday & holiday gift or placed in house, restaurant, bedroom, cafe or office etc.