LED Newton's Cradle
The Newton’s Cradle has traditionally been the most eye-opening way to understand his theory of the conservation of energy. This colorful version, has LED-lit balls flashing in five ever-changing colors each time they meet.
- Dimensions: L: 7" x W: 6" x H: 7.75"
- Power: Requires 6 x AA Batteries, not included
- Warning: Choking Hazard (1) Not for under 3 years