Pole Reversal Happens All The (Geologic) Time | NASA
/illustration-of-a-horseshoe-magnet-s-attractive-power-172221336-5c3feb6646e0fb00010fbb39.jpg "How to Demagnetize a Magnet")
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Magnets from Mini to Mighty - MagLab
Magnets from Mini to Mighty - MagLab
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