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!
Learn all about the science of light, optics and visual perception with this wonderful kit!
Learn how solar cells transform light into electrical energy with this great kit!
This kit will get your paper plane ready for takeoff!
Everything you need to setup your own dancing Oobleck (non-Newtonian fluid) apparatus!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Build a model green house and 9 other green energy-related devices with this great kit!