What a magnet and magnetic pole are, and how magnetic force is related to magnetic field.
Reviews what magnets are, magnetic force, magnetic poles, and magnetic fields.
Discover the strange behaviors of magnetic fluids called ferrofluids, and learn some of their many uses.
Find out how a magnet and an electric circuit can be used to create a simple burglar alarm.
Learn about the properties and uses of neodymium magnets, the strongest magnets in the world.