X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 49
a y rays to fields of 30,000 gauss. 26 X RAYS cathode, the surface of which is inclined at 45° to the rays,and is usually made of a metal of high atomic weight, suchas platinum (Fig. 12). An additional anode is usually pro-vided, but is not indispensable. The anode and cathodeare generally of… … d° Anode \ Anticathode / Cathode FIG. 12.—A simple type of focus bulb showing the various electrodes. or cooled in some fashion. The pressure of the gas in anX-ray tube becomes lower with use, and a device for soften-ing the tube (i.e. raising the pressure) is therefore usuallyprovided. The higher…
X-rays
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