This 7.25 x 10.25 inches magnifying plastic sheet is great for optics / science projects, for reading or just fun. A French physicist named Augustin Fresnel invented this lens in 1822 to be used in lighthouses. The construction of Fresnel lens is quite interesting as it allows magnification just like regular glass lenses do but it can be as thin as paper!
Easily assemble a working alarm motion detector!
This superb chemistry set features 350 mind-boggling experiments!
Build over 100 exciting electronic projects with this easy to use kit!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
The Ball of Whacks is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
Learn Chemistry While Creating Sweet Treats