Physics of Magnets :: physics science magnet

Magnets atomic number 18 one of the fundamental items in physics. This page is designed in order to provide a general overview of draws and their uses as well as an in depth look into real aspects of magnetism.We all know certain situations where magnets are apply, hanging things on a refrigerator for example. But different applications are more more useful in our society. They are used in all kinds of speakers, and in some(prenominal) computer parts including aphonic drives and floppy drives ( for recording and reading purposes). Perhaps a more honey oil use that goes unnoticed is the magnetic strip on credit and debit entry cards. These con strand a certain magnetic makeup, that is why you are to keep an eye on them away from other magnets. Magnets are also used in many motors, in such items alike(p) a dishwasher, DVD and VHS players, and a pager or cell phone vibrator.Magnets are all dipoles, that is they all have both a north and a siemens pole. No know magnetic m onopoles exist. Looking at magnets from a basic point of view, opposites draw and quarter and similars repel. Magnetic field lines always move from the north pole to the south pole, we will discuss this later.Some of the major contri simplyors to magnets are men like Hans Christian Oersted, James Clark Maxwell, William Scoresby, Michael Faraday and Joseph Henry.Hans Christian Oersted experiment with a wire carrying a current and a compass led to much of what we know active Magnetic Fields.James Clark Maxwell discovered relationships between electricity and magnetism many of which are used in the Electromagnetic Theory. More reading on the relationship between magnets and electricity can be found here.William Scoresby used the Earths magnetic fields to produce powerful magnets.Michael Faraday and Joseph Henry are reported to have simultaneously discovered electromagnetic induction, which is the effect whereby the relation motion of a magnet and an electric coil produced a current . there are three types of magnets. Permanent, temporary, and electromagnets. Permanent magnets are the most common ones. once they are magnetized they stay so (although they can lose much of their magnetic force). They can be metallic elements found in nature. Temporary magnets entertain the properties of a magnet while in a magnetic field, but lost these properties once the field goes away. An example of this would be a typography clip that is charged and can act like a magnet for a short while. Electromagnets are wires wrapped around a metal center(usually iron).