Abstract
THE object of this addition to the many electrical text-books is to bridge the gap between elementary handbooks and treatises on dynamo design. The general principles of induced currents and electro-magnetism are briefly recapitulated, a few of the more common instruments are described, and the main features of the direct-current dynamo and motor are treated in a practical way. We are pleased that the authors have the courage to use the calculus in such an elementary work where it simplifies proofs, for, as they rightly point out, “it is essential to all students of engineering.” The treatment is apt to be a little too sketchy for the second-year student for whom the work is intended, and future editions should remove such blemishes as “electric-motive force.”
The Elements of Direct-current Electrical Engineering.
H. F.
Trewman
G. E.
Condliffe
By. Pp. vii + 219. (London: Sir Isaac Pitman and Sons, Ltd., 1921.) 7s. 6d. net.
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The Elements of Direct-current Electrical Engineering . Nature 108, 431 (1921). https://doi.org/10.1038/108431d0
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DOI: https://doi.org/10.1038/108431d0