SUBJECT INDEX 



657 



Chromatographj', 33 

 Chromosomes, breaking, 513-5 



Iragmen t at ioi i , 51 8-9 

 Circuits, common mode degeneration, 

 252-3 



counting, 620-1 



equivalent. See Equivalent circuits. 



Higinbotham, 621 



Neher-Harper, 617-8 



quenching, 617-8 



Wheatstone bridge, 157-9 

 Cloud chamber, photograplis, 506-7. 



515 

 Clusters, 509 IT. See also Ions, clusters. 

 Coagulation, by ultrasonics, 337-8 

 Coefficient, absorption, 423-5 



attenuation, 430 



extinction, 423-4 

 Combustion, in bomb calorimetry, 

 193-5 



Kjeldahl, 580 

 Compton process, 465-7, 603 

 Concentration work, 42 

 Condenser, aplanatic, 373 



darkfield, 358-60 



microscope, 358-60, 372-3 

 Conductivity cells, thei-mal, ItiG 

 Constants, .sedimenlutiun, measure- 

 ment, 87-89 



subject to change, 28 

 Copper, "K" X radiation, 461-2 

 Cosmic radiation, 494-6 

 Counterions (Gegenion), 272 

 Counters, dipping G.M., 623 



Geiger-Mueller. See Geiger counters. 



radioactivity, 615-23 



screen wall, 623 

 Counting (microscope), 375 



statistical apjjroaoh, ()23-() 

 Countinji late, backgroutid, 624-6 



meter, 642-3 

 Critical illumination, microscopy, 372- 



4 

 Crystal apparatus (ultrasonic vilna- 



tions), 318-26 

 Crystals, for ultrasonic oscillators, 318- 

 20, 324-6 



mounting (ultiasonics), 320-4 



Cunningham factor, 114, 118 



Curie, definition, 605 



Cyclotrons, 526-8 



Cylindrical lens method (ultracentrif- 

 ugation), 79-83 



Cytological [)reparations, by freezing- 

 drying, 218, 223-4 



D 



Dark count (radioactivity), 624-5 

 Dark-field microscopy, 358-60 

 Data, 26-29. See also Experimental 

 data. 

 analj'sis, 29-32 

 Decade scaling circuits, 621 

 Decay, processes (radioactivity), 601-5 

 Decomposition, water by radiation, 



516-8 

 Dehydrating frozen materials, prin- 

 ciple, 212-3. See also Freezing- 

 drying. 

 Delta raj's, 513-4. See also Electrons. 

 Densit.y, determination for isotope 

 ratios, 563, 574 

 (spectrophotometry), 424 

 Depth-dose, X raj^s, 458-61 

 Depth of field, microscope, 347 



electron microscope, 388-9 

 Dermalor, 151, 161. See also Resist- 

 ance thermometers. 

 Desiccation. See Freezing-drying proc- 

 ess. 

 Design of experiments, 25-26, 37 

 Deuterium, compounds, synthesis, 573 

 determinations, 563, 574, 585 

 ions, 530, 579-80 

 uses as tracer, 594-5 

 Dielectric constant, effect of tempera/- 



ture, 165-() 

 Ditlraction, effects, 382-3 

 image, 345, 348-9 

 plates (phase microscopy), 367-8 

 Diffusion, rate, effect in mass spectrom- 

 etry, 587 

 and transport studies, tracers, 566-7 

 Dilution factors, isotopes, 590 

 Dilution method (isotopes), 568-70, 

 635 



