. Radiography, X-ray therapeutics and radium therapy . *> <€. Fig. 52.—Diagram showing the use of a dia-phragm between tube and plate. (Schall.) Fig. 53. -Diagram showing the use of a cylinderdiaphragm. (Schall.) rays emanating from the glass wall of the tube. If we place a diaphragmbetween tube and plate, some of these secondary rays are stopped, and, thenearer the diaphragm to the tube, and the narrower its aperture, the moreefficient will it be. But as metal plates cannot be brought quite close to thetube, some secondary rays will still reach the plate unless a cylinder diaphragmis em

. Radiography, X-ray therapeutics and radium therapy . *> <€. Fig. 52.—Diagram showing the use of a dia-phragm between tube and plate. (Schall.) Fig. 53. -Diagram showing the use of a cylinderdiaphragm. (Schall.) rays emanating from the glass wall of the tube. If we place a diaphragmbetween tube and plate, some of these secondary rays are stopped, and, thenearer the diaphragm to the tube, and the narrower its aperture, the moreefficient will it be. But as metal plates cannot be brought quite close to thetube, some secondary rays will still reach the plate unless a cylinder diaphragmis em Stock Photo
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Reading Room 2020 / Alamy Stock Photo

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2CRK447

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7.1 MB (140.3 KB Compressed download)

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1399 x 1786 px | 23.7 x 30.2 cm | 9.3 x 11.9 inches | 150dpi

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This image could have imperfections as it’s either historical or reportage.

. Radiography, X-ray therapeutics and radium therapy . *> <€. Fig. 52.—Diagram showing the use of a dia-phragm between tube and plate. (Schall.) Fig. 53. -Diagram showing the use of a cylinderdiaphragm. (Schall.) rays emanating from the glass wall of the tube. If we place a diaphragmbetween tube and plate, some of these secondary rays are stopped, and, thenearer the diaphragm to the tube, and the narrower its aperture, the moreefficient will it be. But as metal plates cannot be brought quite close to thetube, some secondary rays will still reach the plate unless a cylinder diaphragmis employed. Fig. 53 shows why a cylinder diaphragm is bound to excludemore secondary rays than a flat diaphragm can do; the cylinder diaphragmcan also be used with advantage for compression. Instruments for Estimating the Hardness of the X-Ray Tube. The X-ray bulb in action presents a picture which in itself is a guideto the condition of the tubes as regards hardness, presence of inverse current, and radiographic value, but if good work is to be maintained it is nec

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