NEWTON'S LIGHT UP CRADLE
See the laws of conservation of mass and energy expressed in colour.
The motion of this 5-ball cradle is the most addicting way to demonstrate Newton's law of conservation of momentum and energy, which makes it a great teaching tool, in addition to being fun to watch.
And we've equipped each frosted glass sphere with LED, it's even more amazing.
Lights react based on their position.
Start a kinetic chain reaction with one ball and see how the others change color in response.
One from each end, set the LED to a single color and watch the light fade as they swing back and forth.
This art-deco is a must on every shelf, desktop and tabletop! Works great as a night light too!