SUBJECT INDEX 



369 



Crookes A glass, 118 

 Crystalline lens, 104 



capsule, 105 



opacity, 118 

 Crystalloids, 187 

 Curie unit, defined, 76 

 Curie-Joliot experiment, 89 

 Curvature of lens, field, 321 

 Cyclotron, 90 



energy of particles from, 92 



mode of operation, 91 



structure, 90 

 Cytoplasmic surface, 170 



Decay constants, 5S 



Decibel notation, 287-292 



Demarcation, nerve current, 215 



Denaturation, 159 



Depreciation of values, law, 58-01 



Depth of focus, 319, 320 



Deuteron, 93, 95 



Dichroic, 152 



Dichromatism, 152 



Difference limen, 298 



Difference tones, 302 



Diffraction patterns, 315 



Diopter, defined, 108 



Diphasic action potential, 217, 218 



Disk, vibrations of, 264 



Draw tube, microscope, 328 



Drop formation, 183 



Drosophila eggs, 85, 86 



Duboscq colorimeter, 152 



Ear, 253 



bones, 263, 268, 269, 271, 278, 280 



canal, 261 



sensitivity, 266 

 Eardrum, 262, 263 

 Effective wavelength, x-rays, 30 

 Egg albumin, absorption of, 146 

 Electric arc, radiations from, 141 

 Electroencephalogram, 238 



patterns, 239, 244 



recorders, 241 



technique, 241 

 Electron gun, 335, 336, 337 

 Electron image defects, 345, 347, 350 

 Electron lens, 332, 334, 337, 340, 341, 348 



aperture, 348 



condenser, 347, 348 



Electron lens, equation, 334 



field, 339 



focal time, 334 



magnetic, 338-341 



objective, 349 



pole pieces, 341 



projection, 350 



resolving power, 349 



short-focus, 340 

 Electron microscope, 330 



condenser, 340, 347, 348 



image, 345, 347, 350 



lenses, 335, 340, 341, 348 



optical analogy, 345 



projector, 342 



resolving power, 332, 347, 349 



sectional view, 343 

 Electron volt, 331, 353 

 Emission data, of biophysically active 

 light, 133 



of mercury vapor, 139 



of sun, 134 



of Sunlight Lamp, 141 



of Sunshine S carbons, 142 



of Therapeutic B carbons, 142 

 Emulsifiers, 177 

 Emulsions, 177 

 Emulsoid particles, 206 

 Encephalogram records, 239-245 



grand mal, 244 



petit mal, 244 



petit mal variant, 244 

 Endolymph, 283 

 Endosmosis, 189 



Epidermis, transmissivity of, 145, 146 

 Equal loudness contours, 266, 289, 295 

 Ergosterol, 161, 163 



absorption curve, 161 

 Erythema, degree of, 135, 136 



due to ultraviolet radiations, 135 



effectiveness, 135, 139 



reaction of untanned skin, 136, 161 



response to ultraviolet radiations, 161 



result of x-rays, 33, 36 



threshold, 136, 138 



time to produce, 136 

 Eustachian tube, 262, 275 

 Excitability, 223, 224 

 Excitatory process of nerve, 211, 223, 233 



