Since their relatively recent appearance on the commercial scene, rare-earth magnets have made quite a splash in the public imagination. The amount of magnetic energy packed into these tiny, shiny ...
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 ...
Science Focus on MSN
Earth’s magnetic field is overdue a flip. Should we be worried?
From time to time, the Earth's magnetic poles flip, leaving us without a protective magnetic field for up to centuries ...
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