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Magnets that can be made easily from material found at home are called homemade magnets. These are very small and weak magnets. They are primarily for having fun and teaching children about magnetism. More »

www.reference.com Science Physics Magnetism

The Earth acts as a magnet because of electric currents generated through the movement of iron in the Earth's molten core. This motion creates a very weak magnetic force that expands from Earth reaching tens of thousands... More »

www.reference.com Science Earth Science

Naturally magnetic lodestones were found in an area of Greece called Magnesia and by the 1100s, lodestones were used for navigation. In 1269, Petus de Maricourt discovered that magnets have two poles. More »

www.reference.com Science Physics Magnetism
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To demagnetize a magnet, cause disorder to the unit magnets within the magnetic material. Strike the magnet first with a hammer, heat it strongly, and then subject it to AC current to eliminate magnetic ability completel... More »

www.reference.com Science Physics Magnetism

Permanent magnets with diminished field strength can be recharged in at least three ways: by striking, stroking or stacking. Each of these methods entails lining up the weakened magnet with a stronger external field and ... More »

www.reference.com Science Physics Magnetism

You can strengthen magnets by placing them in water, stacking them on top of each other or recharging them. The method of making a magnet stronger depends on the type of magnet you have, explains HowStuffWorks. More »

www.reference.com Science Physics Magnetism

Car magnets usually stay in place while the vehicle is in motion as long as they are applied properly. Magnets stay on best when placed on areas of the car that are flat or slightly curved. Car owners should only apply t... More »

www.reference.com Science Physics Magnetism