. The principles and practice of roentgenological technique . Fic. 97.—The vacuum is so low that the cathodestream is not focused. tage. This potential difference may be con-trolled in several ways. 1. By varying the characteristics of thetube:A. \acuum. The higher the vacuum, the higher the vol-tage necessary to generate x-rays and thehigher the resulting B. Electrode. The tube is made harder by: (1) Drawing the electrodes closer to each other. (2) Diminishing the size of the cathode. (3) By withdrawing the cathode terminal into the neck of the tube. (4) By diminishing the sjjace betwee
. The principles and practice of roentgenological technique . Fic. 97.—The vacuum is so low that the cathodestream is not focused. tage. This potential difference may be con-trolled in several ways. 1. By varying the characteristics of thetube:A. \acuum. The higher the vacuum, the higher the vol-tage necessary to generate x-rays and thehigher the resulting B. Electrode. The tube is made harder by: (1) Drawing the electrodes closer to each other. (2) Diminishing the size of the cathode. (3) By withdrawing the cathode terminal into the neck of the tube. (4) By diminishing the sjjace between the cathode and the glass.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920
