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.
Build a robot that's an artist too!
Get this great introductory chemistry kit for your favorite young scientist!
This advanced physics kit is perfect for older children already versed in physics knowledge!
Learn about hydrogen fuel cells with this incredible kit!
This caffeine molecule mug makes an excellent gift!
Make the coolest 3D pin art on your desk with this amazing desk toy.