All materials experience magnetism, some more strongly than others. Permanent magnets, made from materials such as iron, experience the strongest effects, known as ferromagnetism. This is the only form of magnetism strong enough to be felt by people.
Then there's paramagnetism, in which certain materials are attracted by a magnetic field, and diamagnetism, in which materials are repelled by a magnetic field. Other, more complex, forms include antiferromagnetism, in which the magnetic properties of atoms or molecules align next to each other; and spin glass behavior, which involve both ferromagnetic and antiferromagnetic interactions."
This is one of the least understood forces. Yes we can make magnets, in that we (people) are very good at utilising Magnetism, what we do not understand is the actual source of this power. A permanent magnet is just that... it will sit on your fridge long after we have shuffled off of this Mortal Coil (Shakespeare) with no appreciable loss of adhesion.
You can rotate a magnet through any plane from the normal with no loss of energetic attraction. The only thing that can affect it is Heat, or another Magnetic Field.
Read More (courtesy of LiveScience) :http://www.livescien...ml?cmpid=529609
Edited by keithisco, 10 July 2013 - 02:47 PM.