X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 77
imary tubeis slight ; the tube may accordingly be very thin, so thatthe primary and secondary windings are close together,with a consequent gain in the efficiency and a diminution inthe size and weight of the coil. The method is accordinglyof special value for smaller and portable coils. Owing… … FIG. 28.—A Cox coil wound on the bisectional principle. For large coils (such as is shown in Fig. 29), some formof sectional winding is used, in which a large number of
X-rays
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