664 



SUBJECT INDEX 



K adioisot opes (contin ued): 



measurement, 610-30 



medioal diagnosis, 649-50 



production by slow neutrons, (i06-7 



radioactivity levels, 644-5 



radioautographs, 636-8 



safety precautions, 643-S 



self-absorption erroi-, 627-30 



special measuring techniques, 621-3 



standards, 630 



survey meters, 642-3 



sjTithesis of compounds, 634 



table, 608-9 



therapy, 650 



toxicity levels, 644-8 



units, 605 

 Radiometers, 152, 162-5 



applications, 164-5 



calibration, 163-4 



dermal, 152, 164 



limitations, 165 



principle of operation, 162-3 

 Radium-beryllium source, 606 

 Radon, irradiation technique, 535-7 

 Range, ionizing particles in tissue, 507, 



520-2 

 Raoult's law, 47 

 Rayleigh scattering, 429 

 Reaction rates, temperature charac- 

 teristic, 167-71 

 Reactions, exchange, 568, 591-2 



mechanisms, 567-8, 595 

 Reciprocity law, 435-7 

 Recoil atoms, range, 550-1 

 Recoil protons, 550-1 

 Recording equipment (electrical), 258- 



9 

 Reference standards, calorimetry, 195 



isotopes, 593, 630 

 Refractive index method, electrophore- 

 sis, 293-5 



ultracentrifugation, 78-83, 93 

 Replica technique, 398-9 

 Research problems, analysis, 6-10 



appraisal, 10 



approach, 2-6 



selection, 11-13 

 Resistance, acoustic, 303 



Resistance {continued ) : 



electrode, 266 



membrane, 268-0 

 Resistance thermometers, l54-(i2 



applications, 160-1 



(calibration, 160 



electrical circuits, 157-9 



limitations, 162 



metallic types, 155 



thermistors, 156-7 

 Resolving power, electron microscope, 

 409-10 



optical microscope, 16-17, 382, 345-6 



ultracentrifuge, 90-91 

 Respiratory quotient, 201-2 

 Re,ynold's numlier, 113 

 Roentgen (r.), 496-7, 538-43. See also 



/•. unit. 

 Koentgen equivalent physical (r.e.p.), 

 497, 540 



S 



Salt bridges, 245-6 



Scalers, ()20-l 



Scaling circuits, 620-1 



Scientific literature, guides, 14, 38 



Schlieren method, in electrophoresis, 



79-83, 293-5 

 Sea urchin eggs, viscosity, 120 

 Sectioning, optical, 347 

 Sedimentation, 68-105. See also Cen- 

 tHfugation. 



centrifugal field, 69-71 



constant, definition, 83 

 measurement, 87-89 

 proteins, 95 



rate, 89 



uniform field, 68-69 

 Self-absorption, radioactivity, 627-30 

 Shadow-castmg technique, 397-8 

 Smear method, 480 

 Sound. See also Ultrasonic vibrations. 



velocity, 302-3 

 Specific heat, 177-8 

 Specific volume, determination, 89-90 

 Spectra. See Absorption spectra, Ac- 

 tion spectra, and Mass spectra. 

 Spectral vision, 431-3, 443 



