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 164
all photographic manipulations, a dark room is anabsolute necessity. Any dry and cool room from whichevery trace of daylight can be excluded may be used forthe purpose. Since radiographic work requires large-sizedplates and developing dishes, the dark room should not betoo small. The presence of a… … Fig. 69. should be derived from a suitable dark-room lamp (eithergas or oil or candle) fitted with a ruby red and an orangewindow, either of which may be used at will. All theoperations previous to and during development must beconducted in ruby light only; subsequent fixing may bedone in orange,…
Radiography · X-rays
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