. Biological effects of radiation; mechanism and measurement of radiation, applications in biology, photochemical reactions, effects of radiant energy on organisms and organic products. Radiation; Biology. 196 BIOLOGICAL EFFECTS OF RADIATION dows employed. Thus, in the case of cesium, thaUum, and uranium, Fig. 32, (3), the sensitivity continues to rise from 3000 to 2400 A, as shown by the dotted Unes where a quartz window replaces the customary thin 2000 3000 WAVE LENGTH 4000 5000 6000A. 2500 3400 380O 4200A 2feOO 2700 2800 2900 3000A 2600 3000 WAVE LENGTH Fig. 32.—Relative sensitivity of spec
. Biological effects of radiation; mechanism and measurement of radiation, applications in biology, photochemical reactions, effects of radiant energy on organisms and organic products. Radiation; Biology. 196 BIOLOGICAL EFFECTS OF RADIATION dows employed. Thus, in the case of cesium, thaUum, and uranium, Fig. 32, (3), the sensitivity continues to rise from 3000 to 2400 A, as shown by the dotted Unes where a quartz window replaces the customary thin 2000 3000 WAVE LENGTH 4000 5000 6000A. 2500 3400 380O 4200A 2feOO 2700 2800 2900 3000A 2600 3000 WAVE LENGTH Fig. 32.—Relative sensitivity of special photocells: Sec. (1) alkali metals (Hughes and DuBridge); Li, Na, K, Rb (Pohl and Pringsheim); Cs {Campbell and Ritchie). Sec. (2) and Sec. (3) Westinghouse ultra-violet photoelectric cells. (Rentschler.) Full-line curves in thin glass; dotted curves in quartz. glass window. From this group, a photocell can be selected having its long-wave-length threshold anywhere from 2675 to 4200 A. By com- bination with short-wave cut-off filters indicated in Table 10 and Fig. 9, any required short-wave-length limit can be secured. Hence, by a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Duggar, Benjamin M. (Benjamin Minge), 1872-1956; National Research Council (U. S. ). Committee on the Effects of Radiation on Living Organisms; Clark, Janet Howell, b. 1889; Cole, Kenneth Stewart, 1900-; Daniels, Farrington, 1889-1972. New York and London, McGraw-Hill Book Co.
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