624 



Ind 



ex 



Rankine balance, 529-531 

 Rate cpnstants, 316-317 

 Rayleigh criterion, 32, 48 

 Rbe, 188 



Reactance, 73, 207, 609 

 Reaction coordinate, 408 

 Reaction rate, 316—317 



diffusion-independent, 406—407 



diffusion-limited, 406 

 Reb, 187 



Recessive, 190, 197 

 Recon, 199, 256-258 

 Red blood cells, 569 



permeability, 429-432 



relative fragility, 229 

 Redundancy, 466 

 Reisner's membrane, 24 

 Relative luminosity, 46 

 Relaxation : 



frequency, 211, 215-218 



mechanical, 215 



method, 587 

 Rem, 187 

 Rep, 187 

 Resistance, 73, 207, 607 



ultrasonic : 



characteristic, 213 

 Resolution, limit of, 538 

 Resolving power, 32, 538, 543 



bright-field light microscope, 541 

 Resonance, 8 



of biological cells, 229, 233-244 

 more exact treatments, 242—244 

 experimental basis, 233—236 

 interfacial-tension model, 235-239 

 rigid-shell model {also gelatinous-shell 

 model), 235, 240-242 

 mixed mode, 241 

 tangential mode, 241 



magnetic, 532 



of molecular bonds, 334 



pulsating mode, 235 



Q factor, 242-243 



surface, 234—236 

 Resonant frequency, 9 

 Resonator : 



Helmholtz, 65, 105 

 Resting potential, 78, 145-146 



muscle, 145-146 



nerve, 78 

 Retina, 35, 41-43, 48-50, 119, 124-127 



model, 124-127 

 Retinene, 353, 381 

 Retinenei, 353—354 

 Retinene2, 357 

 Rhodopsin, 124, 127, 352-357 



daylight, 124 

 Ribonuclease, 380 

 Ribose, 278 



Ribose nucleic acid, 254 {see RNA) 

 Ribulose-1, 5-diphosphate, 368-369 

 RNA (ribose nucleic acid), 254, 269, 



295-296, 567 

 Rods, 35, 41-43, 45-48, 124-129 

 Roentgen (r), 187 



Rotifers : 



damage by ultrasound, 231 

 Round window, 21, 22 

 rll-mutant, 257 

 Russel-Saunders coupling, 518—519 



S-anode, 161, 162, 164-165 



Sarcolemma, 140 



Sarcomere, 140 



Satellite cell, 77 



.Saturation, 120 



Scala media, 24 



Scala tympani, 22, 24 



Scala vestibuli, 22, 24 



Scenedesmus, 362 



Schematic eye, 37, 38 



Schwann cell, 74, 77 



Scintillation counter, 560 



Scission, 302, 304 



Sclera, 34, 40 



Scotopic vision, 46—48 



Selection rules, 511, 513, 517-518, 521-522 



Semilunar valve, 162, 164 



Sense of direction, 59—61 



ants, 59-60, 65 



bees, 60-61 , 65 

 Sensory systems, 52-53 



special, 1-65 

 Serine, 275 



Servomechanism, 94, 180 

 Sharp, s, 518 

 Shear modulus, 240 

 Shear wave, 214 

 Silk, 380 

 Singlet state, 522 

 Sink, 424 



Sino-auricular node, 161 {see also S-a node) 

 Sinus venosus, 161, 162 

 Snell's law, 595-597 

 Sone, 10 

 Sonic, 220 

 Soret band, 334 

 Sound : 



and the ear, 3—26 



physical characteristics, 590 

 Sound (acoustic) pressure, 5, 7, 8 



amplitude, 5, 7, 8, 10, 13 

 Sound pressure level, 8—11, 13 

 Spectral density, 122 

 Spectrometer, 483 

 Spectrophotometer, 483, 488-495 



detectors, 494 



dual-beam, 498 



light sources, 490-491 



split-beam, 496, 498-500 

 Spectrophotometry, 481-524 



absorption, 481-500 

 flow systems, 495—496 

 quantum mechanical basis, 501—524 

 role in biology, 481-484 

 table of symbols, 489 

 units and symbols, 484-489 



infrared, 509-516 



