How does a magnetizer/demagnetizer work?
physicsforums.com
How does a magnetizer/demagnetizer work?
Hi.These things can be used to magnetize/demagnetize tools, e.g. screwdrivers: How do they work? I'm particularly interested in the demagnetizer part. How do the field lines look like?And why is there this stair-like structure in the upper hole?
Aug 14, 2016
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