CraigD Posted January 5, 2008 Report Share Posted January 5, 2008 But I do believe it possible to build a machine which consumes only magnets (well the field generated by magnets) for fuel. And of course when the magnets loose their magnetism they would have to be replaced so I guess it would litteraly consume magnets as well.The problem with this approach is, as best I can tell, that demagnetizing a magnet – randomizing its constituent magnetic dipoles doesn’t produce energy, but consume it. Demagnetizing a magnet requires its many little dipoles to be twisted within its solid crystal matrix, which requires work/energy. In principle, it should be possible to make an engine that takes, say, demagnetized iron, alnico, or a rare earth metal alloy, and generate energy as a by-product of magnetizing them. Perhaps heating them to their Curie point, magnetize the material with a small magnetic field, then cool them, extracting more heat than was used to heat them? Pretty complicated stuff, though, far beyond my skills of estimation or experimentation. :evil: Quote Link to comment Share on other sites More sharing options...
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