What is a permanent magnet? - Quora
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Fusion Energy Solution May Come From Permanent Magnets Like Those on Refrigerator Doors – But Far Stronger
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Permanent Magnet & Electromagnet Principles - ppt download
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SOLVED:Why aren't permanent magnets really permanent?
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What happens when a permanent magnet is brought near to the electromagnet which is energized by AC current? - Quora
Permanent Magnets
Permanent magnets stronger than those on refrigerator could be a solution for delivering fusion energy
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Neodymium magnet - Wikipedia
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