316 



SUBJECT INDEX 



Counting, 166 



blood cells, 213 



dust, 227 



mold, 204 



spermatozoa, 211 

 Cover glass, 79, 143 

 Critical illumination, 238, 295 

 Crystals, 223, 228 



liquid, 229, 235 

 Curvature of field, 78 

 Cyclosis, 219 

 Cytology, 207, 220 



Daphnia, 205 



Death, cellular, 210-212, 220 

 Definitions, A- and B-type diffraction 

 plates, 105 



afocal pupil function, 243 



amplitude, 14 



coating function, 247 



complementary area, 24, 75 



complex number, 37 



conjugate area, 24, 75 



contrast A', 57 



dark and bright contrast, 49 



darkest contrast, 49 



A, 19, 44, 263 



8, 47, 251 



D wave, 19 



deviated wave, 17 



g, 44, 263 



Gp, 48, 288 



Gs, 48, 287 



h, 46, 251 



interference, 15 



object function, 260 



optical direction cosines, 241 



optical path, 2, 17 



optimum bright contrast, 55 



P wave, 19 



partial energy density, 239 



phase, 15 



phase advance, 15 



phase retardation, 15 



pupil coefficients, 269 



pupil function, 243 



resultant wave, 15 



total energy density, 239 



undeviated wave, 17 

 Delusterizing, rayon, 235 



Desmids, 204 



Deviated wave, 17, 18, 27, 34-36, 42-46, 



54, 283 

 Diatoms, 204 

 Diffraction curves, 70 

 Diffraction gratings, 33, 264 

 Diffraction plate, 9, 75, 76, 87 



A type, 105 



achromatic, 94 



B type, 105 



color phase contrast, 96 



commercial tlesignations, 199 



complementary area, 75 



conjugate area, 75 



for darkest contrast, 49 



for optimum bright contrast, 55 



function of, 75 



general purpose, 79, 93 

 design of, 79 



methods of making, 89 



nomenclature, 104 



quarter-wave, 51, 59, 79, 274, 281 



selection of, 57-65 



three-quarter-wave, 94 



with periodic object structure, 274-281 

 Digestion, 219 

 Dirichlet integral, 266 

 Dispersion of materials for diffraction 



plates, 93, 95, 96, 97 

 Dispersion staining, 184, 227 

 "Dope" (cellulosic), 231, 235 

 Drugs, 228 

 Dust, 184, 227 



Eberhard effect, 167 

 Electronic flash, 187, 193 

 Emulsions, 181, 223, 229, 235 



phase identification, 234 



photographing, 187 



reversal of, 219 

 Endamoeba, 220 

 Endolimax, 220 



Energy density (elementary theory), 

 average, 41 



image of particle, 48 



image of surround, 48 



in primary diffraction image, 67-73, 

 253 



partial, 239, 256, 260 

 Energy density (total), 239, 256 



