An essential piece of equipment for demonstrating that the forward velocity of a ball ejected vertically is the same as the forward velocity of the vehicle from which it was ejected. Includes a vertical spring-loaded barrel and a 1" diameter steel ball. The ejection mechanism has two settings that are controlled by a release pin and cord. Instructions are provided.
Learn how solar cells transform light into electrical energy with this great kit!
This toy combines the wonders of Sea Monkeys and glow-in-the-dark fun, all in one!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
An ancient toy featuring optical illusion and hands-on fun that never grows old!
Build a model green house and 9 other green energy-related devices with this great kit!
This classic device is used to demonstrate the conservation of mechanical energy.
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