Did you know GM invented the domestic, affordable permanent magnet? Before this neodymium-iron-boron magnet came along in 1984, electric motors, generators, audio speakers, hard-disk drives, and the ...
The History Channel, part of A&E Television Networks, New York, has begun airing an episode of its show “Modern Marvels” that concentrates on magnets, including a segment on their role in scrap ...
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