SUBJECT INDEX 



581 



Dectectors, photoelectric, photovoltaic 

 cell, envelope materials, 136 

 quantum efficiency of, 137 

 quartz envelopes for, 136 

 photographic, accuracy of, 133 

 fluorescent sensitizer for, 134 

 sensitivity of, 134 f 

 thermal, bolometer, 130 

 response time of, 131 

 sensitivity of, 131 

 Golay cell, 131 



sensitivity of, 132 

 sensitivity, ultimate limit of, 131 

 thermocouple, 130 



thermoelectric power, 131 

 sensitivity of, 131, 132 

 Deuterons. 335, 340, 342 

 Development, effects of radiation on, 



290, 300, 303 

 Diazomethane, 432 

 Dichroism, 172, 173, 177, 183, 230 

 DitTusion-controUed processes, 19-20, 36 

 Dimerization, photochemical, of an- 

 thracene, 30 

 Direct effect of ionizing radiation, 337 

 Disinfection by ultraviolet, absorptive 

 liquids, 78-80 

 blood plasma, 78-85 

 exposures of films, 82 

 by film spreaders, 80, 81 



controls, 82, 85 

 laboratory methods, 81 

 milk, 78-81 



penetration into, 78-80 

 sugar syrups, 78, 79 

 vaccines, 78-81 

 air, 67 



effective exposures, 67 

 health value, 73 



conservative appraisal, 76, 77 

 hospitals, 74, 75 

 institutions, 76 

 Navy barracks, 76 

 schools, for colds, influenza. 75 

 rooms, 69 



ceiling height, 71, 72 

 circulation of air, 70 

 hospital, 71-73 

 hospital barriers, ultraviolet, 71, 



74 

 intensity of ultraviolet in upper 



air, 71 

 louvered ultraviolet fixtures, 73 

 occupied, 69 



open ultraviolet fixtures, 72 

 protection of occupants, 52-70 

 unoccupied, 69 

 upper-air method, 70, 71 



Disinfection by ultraviolet, air, rooms, 

 and ventilation, 70, 71 

 standard, tentative, 73 

 air duct, 52, 53, 67, 68 

 effect of size, 68 

 intensity of ultraviolet, 67 

 reflective walls, 68 

 relation to make-up air, 69, 70 . 

 turbulent flow, 68 

 surface of solids, 82, 83 

 fruit, smooth skins, 83 

 grain, 83 

 sugar, 83 

 water, 77 



absorption of ultraviolet, 77, 78 

 devices for, 79 

 exposures, 77-79 

 Dispersive power, definition of, 148 

 Dissociation, and cage effect, 15 

 direct optical, 3-4 

 internal conversion, 6-7, 15 

 predissociation, 5-6 

 Dissociative changes. 404 

 Distribution curves, photometric data, 



240-241 

 Distributional error, 235 

 Division delay, 285, 289, 293, 297, 302- 

 304 

 by alpha radiation, 307 

 role of nucleus and cytoplasm in, 307- 



309 

 time course of, 302, 303 

 by ultraviolet radiation, 285, 289, 293, 



297, 300, 302-304, 307-309 

 by visible light, 297 

 by X rays, 297, 303 

 DNA (see Deoxypentose nucleic acid; 



Deoxyribonucleic acid) 

 Dosage curves, flattening of, 275-278 

 Drosophila, 249, 251-258, 267-268, 272- 

 273, 277-278, 404, 410 

 "genoide" of, 360 



E 



Echinoderm photoreactivation, 481-482 

 Efficiency or quantum yield, 497 

 Einstein photochemical equivalence 



law, 1 

 Electric arcs, 487 

 Electrical stimulation, effects of, on 



radiation injury, 304 

 Electron transfer processes. 15-17 

 Embrj'O, abortion, induction of, 261 

 chimeras, 265 

 deficiencies, 261-263 

 physiological damage by ultraviolet, 

 252 



