All magnets have both a north and a south pole, which causes them to either repel or attract one another depending on how the two poles are lined up. If the north pole of one magnet meets the south pole of another, the two will be attracted, but if either both north or south poles meet, the magnets will repel one another.Know More
No matter what type of magnet, the opposite poles always attract while similar poles always repel. Each magnet sends out a magnetic field, which is positive on one pole and negative on the other. This magnetic field is the result of the movement of negatively charged electrons within the magnet. These fields are strongest directly at the pole, which is why the ends of magnets will so powerfully repel or attract each other.
Magnets are constructed from one of the magnetic metals, such as iron, nickel or cobalt. These materials will always be attracted to a magnet, or they can be magnetized to form a magnet themselves. Steel is another magnetic material, as it is usually constructed mostly of magnetic iron.
To test whether a material is magnetic, it is necessary to use another magnet to see whether or not the two will repel one another.Learn more about Magnetism
Metals that are attracted to magnets include iron, nickel and cobalt. The majority of metals are not attracted to magnets, including copper, silver, gold, magnesium, platinum and aluminum. However, the metals that are not attracted to magnets may magnetize slightly when placed in a magnetic field.Full Answer >
The uses of magnets in everyday life include in the household, credit cards, electronics, industrial work, medical equipment and jewelry. In different industrial fields, magnets are useful as magnetic sweepers or sorters. Everyday electronics used in the home, such as televisions, computer disks and videotapes, also require magnetism to produce some type of magnetic field.Full Answer >
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.Full Answer >
To make a magnetic levitation car, first carve a polystyrene block into the shape of a car and glue magnets on the bottom with the negative side facing down, then create the track by gluing magnets with the negative side facing up. The magnets will repel from each other and keep the polystyrene car levitated above the track.Full Answer >