Seeing is believing. In these animations, we show you what electricity and magnetism might look like if they weren't invisible.
EMF, or electromotive force, refers to the voltage created by a battery or by a changing magnetic field. Counter EMF, also called Back EMF, is a related phenomenon that we will illustrate in this animation.
Conventional automobiles burn gasoline in an internal combustion engine and convert that energy into motion. But first a spark is needed to ignite the fuel mixture. This animation shows how a 12-volt battery generates the high voltage required to create such a discharge.
You use it to pop popcorn and heat up soup. Now learn what happens behind the microwave door.
Used originally to charge particles in atomic accelerators, Van de Graaff generators are now used mostly to educate students about electrostatics. See how they generate the static electricity that can make your hair stand on end.