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Word Count: 372
Magnetism has many uses in the modern world So manyin fact that it is virtually impossible to cover them all but the mainapplications do stick out Magnets are used in instruments for navigationelectronics energy and health The earliest use of magnets to effect so many peoplewas probably the magnetic compass The magnetic compass has a needle suspendedon a pin one end of the needle is magnetically charged As a result thisend always points to magnetic north so a person can navigate his course Magnets have even more uses in modern day life Manyof todays consumer electronics use magnetism to operate Some speakersfor example have a magnet at the base to help produce sound There arealso magnets in everyones car Spark plugs have magnetos in them whichhelp run a four-cycle internal-combustible engine Magnetos are devicesthat use magnets to help produce an alternating current because they havethis property they are used in transformers solenoids ACDC motors andgenerators as well Magnets and magnetos are also used in satellites whichhelp us predict whether navigate and watch television just to name afew Magnets help produce energy as well As written abovemagnetos help produce alternating current Dynamos are the same conceptbut they produce direct current Magnets are realized to be future sourcesof energy also Magnetohydrodynamics MHD is a theoretical source of energywhich uses plasma to turn generator turbines but the plasma needs to becontained with magnets Most of the time a magnet will help contain somethingin these types of energy For example magnets are used to help containantimatter and ingredients needed for nuclear fission Hospitals have benefited from magnets as well Magnetsare applied to Magnetic Resonance Imaging MRI and CAT scans With thistechnology doctors can look into a persons body better A MRI scanner createsan image of a thin section of a persons body A MRI takes images of certainatoms and molecular structures and so images of the heart veins arteriesbrain and central nervous system can be
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