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<p>[QUOTE=&quot;cpm9ball, post: 5124995, member: 24633&quot;]Consider this: A coin is &quot;sucked&quot; onto the surface of a very strong magnet. You have a hard time pulling the coin away from the magnet. Your only alternative is to slide the coin across the surface of the magnet so you can get a grip on the edge of the coin. What do you think may have happened to the surface of the coin after you have forced it to slide across the face of the magnet?[/QUOTE]</p><p><br /></p>

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