Practical radiography : a handbook for physicians, surgeons, and other users of X-rays (1901)
Isenthal, A. W, Ward, H. Snowden (Henry Snowden), 1865-1911 · London : Published for The Photogram, Ltd. by Dawbarn and Ward, Ltd. · leaf 154
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 light. … 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…
Radiography · X-rays
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