318 



SUBJECT INDEX 



Gas-filled counters, Geiger, pulsed 

 operation, 294 

 recovery time, 293 

 resistance quenching, 292 

 self-quenching, 292 

 technical construction, 295-297 

 well-type, 296 

 windowless, 295-296 

 windows for, 295-296 

 operation, 289-291 



Geiger-counter region, 291-297 

 ionization -chamber region, 



289-299 

 proportionality region, 290 

 region of limited proportionality, 

 290-291 

 parallel-plate, 298-299 

 point, 297-298 

 spark, 299-300 

 Gas flow-velocity transducers (see 

 Flow-velocity transducers, for 

 gases) 

 Geiger counters (see Gas-filled 



counters) 

 Geiger-Muller counters (see Gas-filled 



counters) 

 Gerdien ion collector, 218-220 

 Gravitation, thermal method for 



measuring, 73 

 Guard-ring arrangement, for ioniza- 

 tion chambers, 287 

 in photoelectric cells, 239 

 in resistive gauges, 7-8 



Hall coefficient for different materials, 



table, 196 

 Hall effect, 195 

 Hall-effect magnetic transducers, 



195-196 

 Hot-wire probe, 129 

 Humidity transducers, 136-152 

 for gases, 137-148 



alumina type, 141-143 

 systems, capacitive, 141-143, 146 

 dielectric, 146-148 

 electrolysis, 144-146 

 electrolytic, 137-143 

 resistive, 137-143 

 thermal, 143-144 



Humidity transducers, liquids or 

 solids, 148-152 

 dielectric systems, 148-150 

 nuclear magnetic -resonance 



method, 150-152 

 resistive, 149 

 test electrodes, 149 

 Hygrometers (see Humidity 

 transducers) 



Impedance matching, 2 

 Induction, electrostatic, for gas flow- 

 velocity measurement, 133-135 

 for space-potential measurements, 



223-225 

 for surface-charge and surface- 

 potential measurements, 

 227-229 

 Induction system, acceleration trans- 

 ducers, 91-93 

 displacement transducers, 62-66 

 for flow-velocity measurements, 



120-123 

 for magnetic field measurements, 



180-192 

 nuclear magnetic resonance, 207- 



208 

 velocity transducers, 91-93 

 Inductive system, displacement trans- 

 ducers, 44—62 

 liquid-level transducers, 97-98 

 for magnetic field measurements, 



180-190 

 for temperature measurements, 



165-166 

 thickness gauges, 11-14 

 Infrared -sensitive transducers, photo- 

 conductive, 264, 266-268 

 photoemissive, 235-238 

 photogalvanic, 271 

 thermal, 274-281 

 Input impedance, 2 

 Input transducers, definition, 1 

 Instrumentation, elements, 1 

 general properties, 2 

 response to environmental influ- 

 ences. 4 

 transfer characteristics, 3 

 useful range, 2 



