SUBJECT INDEX 
R 
Radio equipment (Contin. ) 
design and manufacture, 550, 
855 O85 WSS Wks SOs 
860, 923, 1083 
Radio-frequency studies, 494 
Radio interference, 61 
Radio-interference telescope, 181 
Radio interferometer, 586, 760 
Radio measurements, 4 
Radio meteorology, 704 
Radio navigation, 6, 211, 668 
Radio noise 
filtration, 754 
Radio physics, 169, 289, 292, 465, 
47h, 476, 495, 496, 523, 566, 
587, 657, 685, 748, 749, 754, 
868, 923, 947, 956, 1039, 109, 
1119 
Radio receivers, 665, 970 
mass production, 970 
Radio reception, 970 
Radio relay lines, 998 
Radio relay systems, 726, 876, 
968 
Radio systems, 668 
Radio telescopes, 181, 240, 703, 
7/1Si, SOF 
Radio telescopy, 923, 1049 
Radio transmitting, 665, 726, 968 
Radio transmitting equipment, 665 
automatic tuning, 483 
Radio tubes 
noise, 290 
Radio wave propagation, 121, 179, 
476, 504, 662, 707, 839, 954 
Radio waves, 683, 1049 
atmospheric propagation, 179 
lonospheric, self-modulation, 
782 
tropospheric, 947 
Radioactive elements, 377 
Radioactive impurities 
determination, 979 
Radioactive isotopes, 19, 146, 354, 
443, 608, 657, 830, 1074 
analysis, 83, 292, 4bk, 74h, 
1085 
applications, 43, 109, 159, 
US, MIS, IO, LU, Sis 
886, 908, 913, 929 
R 
Radioactive isotopes (Contin. ) 
corrosion studies, 104 
decay, 4h 
metallurgy, 428 
mining, 436 
production, 443 
spectra, 184 
testing, 872 
tracers, 142, 210, 377, 415, 
458, 830, 1016, 1133 
Radioactive isotopic instrumenta- 
tion, 443 
Radioactive materials, 5 
storage, 75 
synthesis, 943 
Radioactivity, 849 
applications, 89 
atmosphere, 392 
gages, 936 
of ocean waters, L46 
Radioactivity indicator, 296 
Radiobiology, 307, 683, 857, 1083 
Radioelectronics, 860, 877, 888 
Radiography, 660, 744 
Radioluminescence 
analysis, 440 
Radiolysis, 359 
Radiometric analysis equipment, 
889 
Radiometric prospecting, 395 
Radiometry, 400, 474 
Radiosondes, 908 
Radiospectrometer, 315 
Radiospectroscopic equipment, 560 
Radiospectroscopy, 471, 499, 947, 
1063 
Radium, 849 
Rail steel, 1133 
welding, 194 
Railroad cars 
construction, 16, 177, 251, 
SiO), 2, 70M, B55, LOSI, 
1046 
Railroad communications, 16, 581, 
682, 746, 1046, 1080 
Railroad engineering, 570, 784, 
855, 1031, 1034, 1080 
Railroad engineers, 1046 
Railroad equipment 
construction, 778 
