X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 32
f\Jeg&fivel>ElectrifiedPlaJie … Fig. 6.—A discharge tube with a Wehnelt cathode, displaying the repulsionof the cathode rays by a negatively charged plate. an ordinary discharge tube ; e.g. with 50 volts, the velocity= 4-2xl08 cms. per sec. The magnetic and electrostaticdeflection of these rays can be strikingly demonstratedowing…
X-rays
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