Magnet

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.
The uses of magnet are as follows:
Magnetic recording discs. Credit, debit, and automatic teller machine cards: All of these cards have a magnetic strip on one side. TV and computer screens containing a cathode ray tube employ an electromagnet to guide electrons to the screen. Speakers and microphones: Most speakers employ a permanent magnet and a current- carrying coil to convert electric energy (the signal) into mechanical energy (movement that creates the sound). A microphone has a magnet too. Electric guitars use magnetic pickups to transduce the vibration of guitar strings into electric current that can then be amplified. Electric motors and generators also have magnets. Hospitals use magnetic resonance imaging to spot problems in a patient's organs without invasive surgery. Chemists use nuclear magnetic resonance to characterize synthesized compounds. A compass (or mariner's compass) is a magnetized pointer free to align itself with a magnetic field, most commonly Earth's magnetic field. Vinyl magnetic art is not for the refrigerator anymore. Magnets have many uses in toys. M-tic uses magnetic rods connected to metal spheres for construction. Note the geodesic pyramidToys, magnets are often employed in children's toys, such as the Magnet Space Wheel and Levitron, to amusing effect.magnet in toy lift magnet in toy well Magnets can be used to make jewelry. Necklaces and bracelets can have a magnetic clasp, or may be constructed entirely from a linked series of magnets and ferrous beads. Magnets can pick up magnetic items (iron nails, staples, tacks, paper clips) Some screwdrivers are magnetized for this purpose. Magnets can be used in scrap and salvage operations to separate magnetic metals (iron, cobalt, and nickel) from non-magnetic metals. Magnetic levitation transport, or maglev, is a form of transportation that suspends, guides and propels vehicles (especially trains) through electromagnetic force. magnet to seal on the purse, magnet in pencil box cover, bits of magnetized papaer bits dance suspended in water in lamp shade, medicinal magnetic toe ring, magmet for magnetic massage, magnetic latch for the door, magnetic crane, magnetic films in giant magnetoresistance chip, magnetic gears to prevent slipping