Abstract
IN this book a very interesting account is given of the iicduction coil in its theoretical and practical aspects. The electromagnetic problems involved are clearly stated, and the various factors which stand in the way of a complete mathematical theory are considered in some detail. The effects of sparking at the interruptor, the parts played by the iron core, by the secondary capacity, &c., are carefully examined and methods of experimental investigation are illustrated. The differences between mechanical and electrolytic interruptors are discussed, and the more purely theoretical part of the book concludes with a chapter on the power and output of a coil and of the factors upon which these depend. The methods of measuring the electromagnetic constants of a coil are indicated, as are the most common sources of breakdown, how they may be detected, and how in some cases remedied.
La Bobine d'Induction.
By H. Armagnat. Pp. 228. (Paris: Gauthier-Villars, 1905.) Price 5 francs.
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La Bobine d'Induction . Nature 73, 124 (1905). https://doi.org/10.1038/073124b0
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DOI: https://doi.org/10.1038/073124b0