INDEX 



333 



Roentgen, unit, 237 



Roentgen equivalent man (rem), 236 



and LET, 237 



and rbe, 238, 239 

 Roentgen equivalent physical, 237 

 Rushton, on color vision, 88 

 Rutherford, on atomic structure, 69-72 



s — elongation; length or distance; sedimenta- 

 tion coefficient 



S — space or distance between points; sensi- 

 tivity of a detector; entropy per mole; 

 substrate for enzyme-catalyzed reactions; 

 [S], concentration of substrate; state; 

 sickle cell variant of hemoglobin. 

 A.Y — change in entropy per mole of reaction 

 £ — entropy of whole system 

 A§ — change in entropy in a process; dis- 

 tortion. 

 Saltatory conduction (See Electrolytes) 

 Samuel, on computers, 304 

 Sanger, on insulin, 126 

 Scalae: media, tympani, and vestibuli, 58 

 Scattering experiments, 70 

 Schmitt, on collagen, 133 



on theoretical biology, 315 

 Schroedinger, on wave mechanics, 71 



on mutations, 145 

 Schwann cells, and myelin sheath, 272, 27" 

 Scintillation counters, 110, 111 

 Scintography and radioactive mapping, 111, 



122 

 Scope of biophysics, 1-2 

 Scotopic (twilight) vision, 88 

 Second law of thermodynamics, 168, 188 

 Sedimentation, 137, 138, 153 

 Self-consistency, logical, in mathematics 



and philosophy, 315-316 

 Semiconductivity, of organic materials, 74, 

 145-147 

 in nerve propagation, 271 

 Sensation of loudness, 55 

 Sensitivity, and background noise, 55-56 

 of ear, 51, 56 

 of eye, 89 

 to ionizing radiations, 247 



Sensitivity constant, ff, for ionizing radia- 

 tions, 247-249 

 Sensory data, about, 47, 102 

 Series, infinite, in biophysics, 22-24 

 Servomechanism, man as a, 301 



properties of a, 300 

 Shannon, on computers, 304 

 Shock, 30 



Shortening, rate and rate constant for, in 



muscle, 279 

 Sickle-cell anemia, physical basis of, 159 

 Signal-to-noise ratio, 299 

 Sommerfeld's atom, 71 



Sonic and ultrasonic therapy, methods and 

 effects, 62-65 



in dentistry, 63 



physicochemical basis for, 61, 64 



paralysis induced by, 64-65 



sterilization by, 63 

 Sound (See Matter waves) 

 Specific heat, 28, 163 



Speech, range of frequency, and power in, 59 

 Spike, in nervous propagation, 265, 306 

 Spring, muscle as a, 278 

 Statistical methods of expressing deviations, 



19 

 Stacy, textbook on biophysics, 56, etc. 

 Steady-state, and equilibrium, 195 



effects of ionizing radiations on, 253 



kinetic processes and, 229 

 Stereoisomers, 143 



Sterilization, by beta and gamma rays, 

 250, 252 



by ultrasound, 63, 252 



by ultraviolet light, 93 

 Stimuli, kinds of, for nerve, 272 

 Strain and stress on bone; elasticity, 34 

 Sugars, (See Polysaccharides) 

 Substrate of enzyme-catalyzed reaction, 201 

 Sun, as earth's primary source of energy, 79 

 Swallow, on irradiation effects on mole- 

 cules, 242 

 Symbols, list of, 319 



Synapse, and central nervous system. 276, 

 304-305 



effect of ionizing radiations on, 292 



neuromuscular, 291 



neuron-neuron, simulation of, 304 



transmission across, 276 

 Systems, concept, 6 ff, 296-297 



diagram illustrating feedbacks, 300, 301 



pans, 7, 8, 297 



properties and theory, 296-301, 315 

 Systolic pressure, 35 



Szent Gyorgyi, on energetics, 161, 185, 191, 

 293 



t — time; time to paralysis 



T — temperature (in deg. Kelvin unless other- 

 wise stated) 

 Tanford, on macromolecules, 126 

 Target theory of radiation damage, 241, 242 

 Teilhard de Chardin, on life, 75, 1 89 



