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 is a great clean heat demonstration model for the classroom setting!
Comprehensive collection of 30 fossils.
Learn Chemistry While Creating Sweet Treats
View the glory of space with this hi-tech telescope set!
Build 14 assorted solar robots, some of which can travel over water!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
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