Knife switches are most closely associated with horror films set in the 1800s, especially in underground laboratories such as the one depicted in Mary Shelley’s novel Frankenstein. This mini single knife switch allows for a circuit to be live or to be turned off. Simply connect the ends of the circuit to the metal screw contacts on the switch and instantly you have a mechanical way of breaking and connecting a circuit.
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
Use this awesome prism to teach about optics and light in the classroom setting!
Explore the wonders of wind power with this amazing kit!
This simple but amusing magnetic toy will keep you busy for hours!
Build a magnetic levitating train with this science fair project kit!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!