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  #11  
Old 11-18-2005, 07:25 AM
e_dmc2 e_dmc2 is offline
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Its got nothing to do with the sand. You just move one bar over the other an if it attracts it evenly, you are holding the iron bar. If it doesent, you are holding the magnet
This is because a magnet can attract more metal on its two poles than in the middle.

_
| |
| | move like this ----->
|_|

___________
|___________|
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  #12  
Old 11-18-2005, 07:26 AM
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The bottom bar
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  #13  
Old 11-18-2005, 07:26 AM
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The bottom bar
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  #14  
Old 11-18-2005, 07:32 AM
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All you have to do is move one bar over the other. If you feel an even force of attraction, the bar at the bottom is the Fe bar. If you dont, the bar at the bottom is the Magnet
_
| |
| | move this way ---------->
| |
|_|
___________
|___________|

This is because the magnetic field is higher near the poles than in the middle
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  #15  
Old 11-18-2005, 12:06 PM
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Nickel wouldn't get attracted. Believe me, I have tried.
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  #16  
Old 11-19-2005, 09:45 PM
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Quote:
Originally Posted by satfire311
Nickel wouldn't get attracted. Believe me, I have tried.
nickel does get attracted to a magnet and so does bronze.
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  #17  
Old 07-30-2008, 09:18 AM
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answer: put one bar in the middle of another, and because the poles in the middle of the magnet are neutral - the bars would stand out - the magnet if but in the middle of another bar would stick to it, which proves that theory!
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