Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 798
is practically no danger of acci-dental short-circuiting. The winding of the coilsis the most expensive part of the construction ofthe giant magnets. In the round type of magnet,there may be as high as three thousand turns ofwire, weighing approximately 220 pounds. Small magnets are employed by… … STANDING ON A SHEET OF STEEL WHICH IS GRIPPED ANDHELD BY THE UNSEEN POWER OF THE MAGNET. end of the working-day for cleaning up the floorsand benches. The magnets are passed swiftlyalong to gather up all the small particles of steel,broken needles, and iron. All this scrap is ofvalue, and its…
Children's literature
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