Excerpt From Scientific Papers. Comparison Of Solid Magnet With One Of Square Iron Wire 6. Comparison Of Magnets Of Round Bar Iron With Hollow Cylindrical Magnet 7. Characteristics Of Magnets For Lifting And For Attracting From A Distance 8. Advantages Of Hollow And Solid Magnets 8. Comparison Of Square Wire Magnets With Square Solid Magnets 9....
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