. A manual of X-ray technic . Fig. 7.—Early type of R6ntgen-ray tube. has been exhausted by means of mercury pumps toabout one-millionth of an atmosphere. The essentialparts of the tube are the cathode, the anti-cathode ortarget, the accessory anode, and some device to regu-late the vacuum (Fig. 9). The cathode of a focus tube is made of aluminum,because this metal does not suif er disintegration withconsequent discoloration of the walls of the tube. The PRODUCTION OF RONTGEN RAYS 15 concave form of the cathode causes the cathode rays tobe f ocussed upon a point on the target, or anti-cathode,
. A manual of X-ray technic . Fig. 7.—Early type of R6ntgen-ray tube. has been exhausted by means of mercury pumps toabout one-millionth of an atmosphere. The essentialparts of the tube are the cathode, the anti-cathode ortarget, the accessory anode, and some device to regu-late the vacuum (Fig. 9). The cathode of a focus tube is made of aluminum,because this metal does not suif er disintegration withconsequent discoloration of the walls of the tube. The PRODUCTION OF RONTGEN RAYS 15 concave form of the cathode causes the cathode rays tobe f ocussed upon a point on the target, or anti-cathode,as it is Fig. 8.—Jacksons focus tube. As tubes are now constructed, the target is alwaysan anode of the tube, but it is not necessarily so. Thetarget is usually made of platinum, because the intense
Size: 2817px × 887px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbones, bookyear1917
