322 



SUBJECT INDEX 



Radiation thermoelements, 274-277 

 Radiation transducers, 233-303 

 for ionizing radiation, 281-303 

 for optical radiation, 233-281 

 Radioactive collector, 225 

 Radioactive-tracer method for flow- 

 velocity measurements, 

 126-127 

 Recombination of ions in ionization 



chambers, 282, 284 

 Recovery time in Geiger counters, 293 

 Reluctance- variation transducer, 

 induction system, 65 

 inductive system, 47 

 thickness gauges, 11-13 



magnetic shunt system, 12-13 

 permeability -variation system , 1 3 

 Resistance-temperature coefficient of 



materials, table, 155 

 Resistance thermometers, 154-165 



construction, 158-159 

 Resistive transducers, displacement or 

 force, 24—44 

 gas-flow velocity, 129-132 

 humidity, 137-143, 148-150 

 liquid-flow velocity, 118-120 

 liquid level, 95-97 

 magnetic fields, 196-199 

 optical radiation, 262-269, 278-280 

 pressure, 102-104 

 for temperature, 154-165 

 thickness, 7-10 

 Response time in photoconductors, 



264-265 

 Rochelle salt, piezoelectric effect, 79 

 Rotating disk for magnetic field 



measurements, 190-191 

 Rotating search coils for magnetic 

 field measurements, 183-185 



Salt -inject ion method for flow 



measurement, 119 

 Saturation current, in ionization 

 chambers, 283 

 for measurement of ion mobility, 



219 

 in vacuum photoelectric cells, 242 

 "Schubweg" in crystal counters, 301 



Search coils for magnetic field 



measurements {see Magnetic 

 transducers) 

 Sensitivity, definition, 3 

 Shaft position encoder, 89 

 Shot effect in photoemissive systems, 



240 

 Space-charge transducer, 221-223 

 Space-potential transducers, 223-225 

 Spark coimters, 299-300 

 Speaker system for displacement 



measurement, 64 

 Spectral distribution of sensitivity in 



photoemissive systems, 235 

 Spreading resistance, 8 

 Spring transducer, 30 

 Strain gauges, 31-37 

 bonded, 34 

 foil, 34 



high-temperature, 37 

 metal film, 36-37 

 semiconducting, 37-42 

 sensitivity of different materials, 



table, 32 

 unbonded, 33-34 

 wire, 31-36 

 Stray capacitance, 66 

 Subcutaneous temperature measure- 

 ment, 172 

 Surface-charge transducers, 227-229 

 Surface conduction, 8 

 Surface-potential transducers, 



227-229 

 Surface-temperature transducers, 157 

 Synchros, 60-62 



Tachometer, capacitive type, 94 



induction type, 92 

 Teledeltos paper, 226 

 Temperature transducers, 153-176 

 capacitive systems, 166-167 

 dielectric systems, 166-167 

 electrolytic systems, 164 

 inductive systems, 165-166 



based on permeability variation, 



165-166 

 based on susceptibility varia- 

 tions, 165 

 ionized gases, 164 



