An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 643
ay tube to the photographicplate by the denser bones, but the flesh is nearly transparentto the rays. Consequently, the photographic negative almostgives the appearance of a negative which shows a skeletonhand or other body. If the sensitive photographic plate isbought in paper wrappings, it is not… … Screen ofCalcium TungstateCrystals Fig. 429. — Fluoroscope, a light-tight box with fluorescent screen.
Electricity · Magnetism
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