Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 84
full capacity,it is said to be saturated.It will lose part of this strength again, until it reaches itsproper strength, which is then permanent. When it hasreached its permanent strength it is said to be aged. Steelmagnets are aged artificially by immersion in steam for alength of time. Magnetic… … Fig. 21. middle. If iron filings are strewn on a paper placed on a mag-net, this fact becomes at once evident from the quantity offilings gathering at different points. (See fig. 21.) It is also 84 MODERN ELECTRICITY evident that the filings place themselves in a certain order rep-resented by…
Electrical engineering
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