Colwell, Hector Alfred, Russ, Sidney · London, G. Bell and sons · leaf 37
iation and of the possibility ofother metalhc impurities being present and giving out theirsecondary rays, it seems desirable that only non-metallic screens,such as paper, leather, felt, etc., should be used. The sequence of changes occurring in the passage of X raysthrough matter may be… … X RAYS THROUGH MATTER 21 geneous X rays (2) and to secondary cathode particles (3), all ofwhich may be detected on either side of the screen. In reality, the rays proceed in every direction from the screen B,but for clearness in the drawing they are limited to some arbitrarydirection. The secondary…
X-rays -- Physiological effect
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