This cadmium sulfide (CdS) light dependent photo resistor has resistance inversly proportional to the amount of light falling on it. In complete darknes it has a 0.2 M ohm resistance and in 10 Lux light it has approximately 10 K ohm resistance.
Great for light sensor electronic circuits, for Arduino modules, robots, and more.
Learn about detective science through this fun fingerprinting kit!
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
This simple but amusing magnetic toy will keep you busy for hours!
This mirascope creates a 3D hologram image!
Heavy-duty microscope for high-school and college biology labs. Magnification of up to 1000X.