A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 1059
riation in density of structure of thebody. If the body E be the human hand, the bona? being dense,obstruct the rays and cast a dense shadow. The fleshy parts are 1034 MAGNETISM AND ELECTRICITY CHAP. not so dense, and the parts of the screen illuminated by the rayspassing through these parts are… … Xffciys Fig. 983.—X-ray tube. obtained and a positive may be printed from it in the ordinary way.Such a photograph is called a radiograph. A modern form of X-raytube is shown in Fig. 983. Ionisation produced by X-rays.—Even more important than theirfluorescent and photographic effects is the power…
Physics
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