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!
Check out this amazing renewable energy science kit featuring the wonders of hydroelectric power!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
An ancient toy featuring optical illusion and hands-on fun that never grows old!
Learn how solar cells transform light into electrical energy with this great kit!
Build a hand that realistically moves its fingers using shape memory allow technology!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.