Double Convex Lens, Highly polished, optically true lens is excellent for physics classroom demonstrations in optics and light refraction, with ground edges, great for physics classrooms, with highest grade, Size: 250 mm focal length, Lens measures 1.5in diameter, 0.2 weight
KidWind 2V/400mA Solar Panel, C0034, for demonstrations and experiments. External screw terminals and attached clip cords make the panels easy to use, Dimensions: 62 mm x120 mm
Laser Diffraction Kit, lets students create, view, and measure diffraction and interference patterns, kit includes two laser pointers-red and green - along with a convenient mounting base and a slide set of diffraction objects
Spectrum Discharge Tube, Mercury Gas to show spectral lines of pure substances. Tubes approximately 260mm long, central capillary portion approximately 3-1/2 to 4 (90-100mm) long with electrodes sealed at both ends and connected to lead wires protected by metal caps
KidWind Advanced Wind Experiment Kit, wind turbine technology, Test different blade designs, gear ratios, generators, and devices to measure electrical and weightlifting power, for College, High School, and Middle School