Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles. Levitating pyrolytic graphite Franklin's Bells Rotary High Voltage Motor Curie-effect heat engine Diamagneticly stabilized magnetic levitation The Gauss Rifle -- A Magnetic Linear Accelerator High Voltage Motor A Railgun in 10 minutes Homopolar Motor A metal that melts in hot water Classic Propeller Toy Magnetism Electromagnetism Electrochemistry Radio Thermodynamics Aerodynamics Light and Optics Biology Mathematics Computers and Electronics Book traversal links for Science Toys Magnetism ›