. Practical radiography : a handbook for physicians, surgeons, and other users of X-rays . Fig. 6Q. sharp, vigorous shadows, not too greatly^distorted. Thetube should be placed with the anti-cathode pointingtowards the observer, and should be in a suitable box, orbe otherwise covered so as to exclude its fluorescent A very suitable tube for radioscopy is made of purplemanganese glass, which absorbs the fluorescent light, andis provided with a thin, transparent window opposite theanti-cathode. Some workers cover their tubes with 132 Practical Radiography opaque material, such as paper;
. Practical radiography : a handbook for physicians, surgeons, and other users of X-rays . Fig. 6Q. sharp, vigorous shadows, not too greatly^distorted. Thetube should be placed with the anti-cathode pointingtowards the observer, and should be in a suitable box, orbe otherwise covered so as to exclude its fluorescent A very suitable tube for radioscopy is made of purplemanganese glass, which absorbs the fluorescent light, andis provided with a thin, transparent window opposite theanti-cathode. Some workers cover their tubes with 132 Practical Radiography opaque material, such as paper; but, owing to the conse-quent increase of heating and the lowering of the vacuum,this method is not advisable. If the coil also is placed inthe dark room, it becomes necessary to cover the inter-rupter spark by encasing the interrupter in cardboard orpaper. When examining very small objects on a fairly largescreen (say, for instance, a finger) it is a good plan to coverthe screen with a piece of cardboard having a suitablesmall aperture cut in it; we thus get rid of the disturbinglateral fluorescence. In all radioscopic examinations it is important, onaccount of the comparatively faint luminosity of the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectxrays, bookyear1901
