This is a standard 5mm size LED that emitts UV - ultraviolet light. Great for hobby electronics projects and science fair projects wherever UV light is needed (checking counterfitting features of money or credit cards, lighting up glow-in-the-dark stars, making scorpions glow, etc.). Works on 3.5V so two AA batteries in series will do.
This simple but amusing magnetic toy will keep you busy for hours!
Build 14 assorted solar robots, some of which can travel over water!
Use this laser pointer for any professional presentation!
Working model representing the sun, earth, and moon and their relationships.
The Ball of Whacks is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
This is a classic demonstration toy of the powers of magnetic fields!