X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 88
break. With most coils, these motor-driven breaks produce aheavier discharge current at the higher speeds. Themercury break is designed so that the current is off rather longer than on ; in this respect it is superiorto the Wehnelt, in which the on period is equal tothe off/ to the detriment of the… … Fig. 40.—Cox mercury-gas break. 6G X RAYS A mercury break permits greater control, however, and thegood types are not subject to current and voltage limits ofworking, such as obtain with an electrolytic break. Rectifiers and Valve-tubes. The chief defect of the induction coil from the point ofview…
X-rays
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