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How do magnetic keepers stop demagnetization​
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How do magnetic keepers stop demagnetization​

User Gaurav Sharma
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Keepers also have a useful safety function, as they stop external metal being attracted to the magnet. ... A keeper for low-coercivity magnets is just a strong permanent magnet that keeps all the domains pointing the same way and realigns those that may have gone astray.

User Prajeesh
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