X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 147
derays from C were spread by a magnetic field into a mag-netic spectrum, plainly visible along the plate anode, AS,which was coated with willemite. By varying thestrength of the field, any part of the spectrum could bebrought over the slit, 8. The pencil of cathode rays whiehpassed through S… … «o-- Fig. 65. Apparatus for showing production ofX rays with cathode rays of varying speed. CHARACTERISTIC X RAYS 125 described on p. 36. The additional cathode K was pro-vided to bombard the anticathodes so as to liberate theoccluded gas, which otherwise, by its continued emission,softens the tube…
X-rays
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