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 navigation,electronics, 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 today's consumer electronics use magnetism to operate. Some speakersfor example have a magnet at the base to help produce sound. There arealso magnets in everyone's 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, AC/DC 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 above,magnetos help produce alternating current. Dynamos are the same concept,but they produce direct current. Magnets are realized to be future sourcesof energy also. Magnetohydrodynamics (MHD) is a theoretical source of energy,which 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 person's body. A MR...