Abstract
THIS treatise on industrial electricity will be completed in three volumes. The first volume is divided into two parts. In the first part the general properties of fixed electrical circuits and of electrical machines are described. The style of the author is admirably clear and he takes great pains to simplify the theory. He lays stress on the importance of the student examining his equations to see that they are homogeneous, a point which is frequently neglected by industrial writers. He points out that permeability is a double valued function and explains why engineers in their formuhe adopt a constant value for it.
Cours d'électricité industrielle à l'usage des élèvesingénieurs: leçons professées à l'Institut industriel du Nord.
Par A. Defretin. Tome 1: L'Électricité dans la science de l'ingénieur. Pp. xi + 582. (Paris: Hermann et Cie, 1929.) 95 francs.
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[Book Reviews]. Nature 124, 685–686 (1929). https://doi.org/10.1038/124685d0
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DOI: https://doi.org/10.1038/124685d0
