788 



SMITHSONIAN PHYSICAL TABLES 



Aeronautics — continued 

 flat plates, thin, 339 

 force coefficients, 339 

 angle of attack, 339 

 drag, 339, 340 

 lift, 339 



Mach number, 340 

 Reynolds number, 340 

 local skin friction, 343, 345 

 moment thickness, 344 

 skin friction, 343 



laminar flow, 343, 344 

 Reynolds number, 343 

 turbulent flow, 343, 344 

 miscellaneous bodies, 343 

 drag coefficient, 343 

 Reynolds number, 343 

 various bodies, 343 

 forces on, 343 

 spheres, 341 



drag coefficient, 341 

 Mach number, 342 

 Reynolds number, 342 

 forces on, 342 

 pressure coefficient, 342 

 Reynolds number, 341 

 critical, 341 

 sphere size, 341 

 standard atmosphere for, 345 

 basis of, 345 

 characteristics of, 347 

 extension of, 347 

 properties, 347 

 ratio specific heats, 345, 348 

 velocity of sound in, 347 

 viscosity, 347 

 kinematic, 347 

 Age, earth, 741 

 moon, 741 



radioactive materials, 679 

 strata, 741 

 universe, 710 

 Air (see also Atmosphere), 592 



aqueous vapor, pressure in atmosphere, 

 599 

 sea-level, 605 

 composition, ground level, 592 



up to F= layer, 592 

 compressibility, 265 

 density of moist air, 596-598 

 dry, thermal properties, 269, 270 

 effects on weighing, 69 



corrections, 69 

 flow (see under Aeronautics), 337 



compressible, 348 

 heat capacity, 163 

 height, 592 



humidity, relative, 602 

 determination, 602-604 

 dry-bulb temperature, 604 

 maintenance, 599 

 various vapor pressures, 601 

 wet and dry temperature, 604 

 index of refraction, 532 

 infrared transmission, 546 

 Joule-Thomson effect in, 278 



Air — continued 

 mass, 592, 720 



different values, 720 



with direction of sight, 720 

 moist: 



density, calculated, 596 

 relative, 598 



transmission, 546 

 saturated water vapor, 600 



pressure, 600 



weight, 601 

 sound, speed in, 306, 594 

 thermal conductivity, 142 

 thermal properties, 270 



dry, 269, 270 

 transmission of radiation, 538, 546 



components, 538 

 ultraviolet, 538 

 viscosity, kinematic, 345 

 weight, 592 

 Albedos (see Astronomy), 737 

 Alcohol: compressibility, 282 



density, mixtures with water, 302 

 melting point, with pressure, 118 

 vapor pressure, 370 

 viscosity, 320 

 Alloys: alnico, 454 

 aluminum, 192, 220 

 Babbitt, 226 

 brazing, 223 

 carboloy, 224 

 conductivity, electrical, 390, 391 



super, 394 



thermal, 138 

 copper, 198 

 density, 293 

 Heusler, 458 

 latent heat of fusion, 165 

 low melting point, 125, 225 



composition, 125, 225 

 magnetic, 458 



alnico, 454 



Heusler, 458 



permalloy, 453 



silmanal, 454 



superpermalloy, 453 

 melting points, 125 



low, 125 

 miscellaneous, 217 

 resistivity, 384 

 soldering, 223 

 special purpose, 220 

 thermal emf vs. lead, 379 

 thermal expansion, 149 



invar, 221 



low expansion, 221 



special purpose, 220 

 Alnico, 454 

 Alpha particles (see also Radioactivity), 



664, 672, 680 

 charge, 50 



characteristics, 672, 680, 681 

 high-speed, artificial radioactive sources, 

 682 



natural radioactive sources, 681 

 ionization, 672 

 mass, 49 

 range in air, 672, 684 



