Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 602
al scattering.There results an undershot radiation, falling where otherwise theradiation is more or less reduced and contrast is lost. In onlytwo ways can this action be overcome, first, by reducing the num-ber of atoms causing scattering by using a diaphragm, thus limit- FiG. 6. ■ ■ ► , -. ■ m… … Two storage battery grids. One has several cracks. Some of themnot visible in ordinary light. ing the amount of material acting, or else by using a device origi-nally due to Bucky and recently developed by Potter. The fluoroscopic and radiographic action depending on theunequal absorption of X-rays…
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