-a magnetic field is the distribution of a force in the magnet
-there are two different magnetic characteristics, north and south
-similar magnetic poles will repel one another, and different poles attract
-a test compass is used to map a magnetic field
-the Earth acts like a magnet, it's magnetic field is produced because of the flow of hot liquid metals beneath the crust
-magnets does not only attract magnets, but they also attract metals that are not magnets, like iron, nickel, and cobalt, which are called ferromagnetic metals
-all magnets are made up of many smaller and rotating magnets, called dipoles, which can interact with other dipoles close by and when the dipoles line up, a magnetic domain is produced
-Oersted's Principle states that charge moving through a conductor produces a circular magnetic field around the conductor
-there are many right hand rules, the first one is where the right hand holds the conductor with the thumb pointing in the direction of positive current flow
-the second rule is when a coiled conductor is held in the right hand so that the curved fingers point in the direction of positive current flow, the thumb points in the direction of the magnetic field within the coil
-electromagnets have a strong magnetic field and produces a lot of magnetic force
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