| http://www.w3.org/ns/prov#value | - Because elements such as praseodymium, neodymium, and dysprosium, all used in magnets, are rarely to be found in an easily exploitable vein, the use of such materials drives the price up considerably.In the early 1800???s, a crude form of switched reluctance electric motor [SRM] was being developed, but really couldn???t take off because of noise and toque variations.Now, 200-odd years later, US e
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