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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

A compass uses a magnet that points north according to the Earth's natural magnetic field. In many compasses, the indicator is a magnetic needle mounted on a spindle that allows it to swing freely, while in others there ... More »

www.reference.com Science Earth Science Geology

Curriculums may vary from school to school, but a typical second-grade science curriculum includes units on scientific inquiry, earth science, weather and magnets. Second-grade science students are taught to recognize pa... More »

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Magnetic levitation is a method of supporting an object with the repulsive force of magnets and the stability of servomechanisms. The object is thus suspended in the air, counteracting the effects of gravity. 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

According to HowStuffWorks, the bullet train, also referred to as the maglev train, works with the use of powerful magnets, metal coils and a large electrical power source. Maglev is a term that stands for magnetic levit... More »

www.reference.com Science Physics Magnetism

The three primary metal elements that are attracted to magnets are iron, nickel and cobalt. These are also the metals used to create most magnets, although some more powerful magnets use rare-earth elements, such as gado... More »

www.reference.com Science Physics Magnetism