Magnet

magnetismMagnets have been known since 600 BC with the identification of a substancewhich can attract a magnet , and the substance became known asmagnet , shaped as a solid .
Experts split twoparts of the objects associated with the magnet , ie objectsmagnetic and non- magnetic , magnetic objects is then also divided intotwo , namely :1 ) The magnets are natural magnets called nature .2 ) The magnets can be created called artificial magnets .POWER MAGNETMagnetic forces of nature in the use of technologyit is still not strong when compared with artificial magnets ,so rarely encountered in the use of natural magnetsthe use of technology .According to the theory , the molecules of the substance of the magneticseen as small magnets each havingselatan.Jika a north pole and the substance does not haveexternal magnetism , it is because the molecules leadsirregular so that there are no effective external field .In order to clarify the molecular theory of magnetic substance weWeber talked about the theory of magnetism and Ampere