Electric sparks are used for welding, powering electronics, killing germs or for igniting the fuel in some car engines. Despite their usefulness, they are hard to control in open space, they split ...
Use homemade conductive and resistant play-doh to build electronic sculptures that light up, move, and make sounds. Anyone who has ever tasted play-doh knows that it’s a salty substance. The salt ...
Electrons in these materials are free to travel along the wire, but their motion in the other two directions is governed by quantum mechanics, radically altering the properties of the material.