Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 91
osition. Tempered steel, in which theiron is in an especial condition, has a very low permeability,while steel containing 12 per cent, of manganese is hardlymore mafjnetic than air. IND UCED MA GNE TIZA TION. 75 The following curves represent the permeability as afunction of the magnetic induction… … Fig. 22. reaches 40 for chrome-steel tempered in oil, and 50 for steelcontaining 3 to 4 per cent, of tungsten. This result showsthat the latter steel is especially suitable for making per-manent magnets. The energy dissipated by hysteresis is in proportion tothe maximum induction to which the metal…
Electricity · Magnetism
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