rgence of thebombardment from a concave kathode. By this device he greatly improved the definition of x-ray photo-graphs, the x-rays arising from a small area of the platinum target,and not, as in the older tubes, from a large area of the glass wall ofthe tube. The platinum target, or anti-kathode,… … Fig. 1.—Original Pattern ofX-Ray Tube. A, Anode ; K, kathode. 10 THE RONTGEN RAYS IN MEDICAL WORK directed to one side of the tube, and hence may be readily thrownupon the object to be investigated, and upon the fluorescent screenor the photographic plate. The original form of Jacksons • focus tube…
X-rays · Radiography
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