Magnetical Investigations, Volume 2 |
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7.5 inch plates annealing Average Weight bars or plates betwixt blister steel Bradford iron breadth busks cast iron cast steel cent chapter cloth column compared comparison compass needles comprising considerable corresponding curve degree of hardness deterioration determined deviating power diagram different lengths dimensions directive power effect of annealing employed exhibited experiments extreme hardness FREDRIKA BREMER hard plates hardened heat History horse-shoe form inches in length investigations J. C. LOUDON linseed oil magnetic capacity magnetic energy magnetical powers magnetical qualities magnetised magnets of different mass Mean Deviation mean power medium plates method of deviations obtained original pairs pig metal plates or bars Power in Combination powers of magnets ratio reduced respective separately shear steel shewn shews single bar six plates steel from Bradford Table tangent temper temperature Tested thickness thin plates tion torsion twelve-inch bars various Vignette Titles vols whilst WILLIAM HOWITT Woodcuts