This is a polished anodized aluminum sphere which, when grounded, is used to receive the intense arc discharges from the Van de Graaff generator dome. The flexible grounding lead is 90cm long and has a banana plug at one end which connects to the base of the sphere and an alligator clip at the other end which connects to the ground post on the base of the generator.
Every kid needs one of these spheres!
Is it a demonstration of a scientific law or a work of art?
The LCD Digital Microscope II is a professional biological microscope at an affordable price. Up to 1600X with digital zoom!
Explore the wonders of wind power with this amazing kit!
Great tarantula specimen for the science classroom!
With this cool electronic kit you get to assemble your own mini electric guitar!