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 191
culation as theabove is eliminated in Londes method. A triangular pieceof wood, with a series of metallic pins arranged at measureddistances from the base, is placed upon the photographic 164 Practical Radiography plate and two exposures with the tube displaced are made.This produces two series of… … » % BoO B-B=C-3A K = A % (m & = -12?- %m act) Fig. 85. always fixed at a certain distance from the plate, a pre-liminary exposure of the triangle alone and tabulation ofthe result are sufficient for all subsequent cases. When fordifferent objects the tube distance has to be varied, a…
Radiography · X-rays
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