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We know the bar of magnets have south and north pole at two ends of the bar. I wonder where is the south and north poles if we make magnets be sphere.
- jason (age 23)
The poles are aligned along the direction of the original magnetizing field. There are several ways of finding them: You could use a small bar magnet and find out where on the sphere its South Pole is attracted. You could sprinkle a few iron filings on it and find out where tend to accumulate. However with this method you don't know which of the two accumulated bunches is North.
(published on 02/17/10)
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