662 



INDEX 



PAGE 



Atmospheric electricity: conductivity 596 



constants, elements 596 



ionic equilibrium 597 



ionization upper atmos- 

 phere 599f 600 



potential gradient 596 



rain, charge on 598 



snow, " " 598 



space charge 597 



thunder storms 598 



transparency to solar radiation, moist 



and dry air 608, 611 



Atom, mass hydrogen, i.66xio- M g 105 



Atomic heats 289 



numbers 483 



packing fractions 484. 851 



radii 49i 



specific heat constant 106 



spectra, series relations 5°2 



spectrum functions 515 



volumes 289, 491 



weights (Birge) 81-85 



electron, 5.5Xio- 4 g 105 



Atoms: atomic numbers 483. 485 



weights 81-85, 483 



Bohr 494 



electron configurations 488 



isotopes 484 



, radioactive 486 



periodic system (Mendeleeff) 485 



quantum numbers 488 



radii 49 1 



radioactive atoms, isotopes 486 



Rutherford 486 



spectrum-series relations 502 



structure 487. 645, 649 



Audibility, sound 194 



Automobile: antifreeze solutions 279 



lights, characteristics of 339 



Avogadro's number, 6.064X io 23 /mol 104, 658 



/3 particles: absorption in air, C0 2 528 



effective range 528 



work of extraction 527 



Babbit metal, mechanical data 125 



Bakelite, physical and mechanical data 655 



Ballistics (I. C. T., 7. 496) 



Balmer series formula 494 



Band spectra constants (I. C. T., 5. 409) J o6 



Bar, definition 658 



Barnett effect (I. C. T., 6, 347) 



Barometer: altitude determinations 189 



boiling point determinations of altitude. 188 



capillarity 187 



gravity, standard, reduction to; 



altitude term 182 



latitude term, English. . 185, 186 

 metric . . 183, 184 



meniscus values 187 



temperature, reduction to standard... 181 



Barye, definition 658 



Batteries, composition, voltages 398 



Baume scale to specific gravities, densities 158 



cane-sugar values 175 



Bel 193 



Bell metal, mechanical properties 120 



Belting leather, mechanical properties 130 



Bessel equation 70 



function, 1st and 2nd orders, roots ...68, 69 



Beta particles (see 13 particles) 527-528 



Biaxial crystals: + refractive indices 367-368 



— " " 368-369 



miscellaneous 370 



Binary stars: (see also under stars) 629-631 



masses vs. spectrum classes 620 



spectrum classes 620 



Binding energy of electrons: ionized atoms 498 



neutral " 497 



Birge's physical constants 73 et seq. 



Black absorbers, transparency 395 



Black body: brightness 33 5 



radiation total 313 



f(\, T) 314-317 



temperature, auxiliary for any 317 



Blind spot of eye 332 



Bode's law ,.,,..,,.,. , 607 



PAGE 



Bohr atom: Hund notation 504 



magneton 106, 107 



orbits for hydrogen 106 



relativistic considerations 494 



Boiling points: elements 252 



inorganic compounds 254 



organic compounds 256 



solvents 220 



rise of, by salt solutions 269 



water, f (barometric pressure) 188 



Bolometric magnitudes of stars, corrections 624 



Boltzmann constant, k, 1.3708X10- 16 erg/deg.... 104 



Bougie decimale 334 



Brasses: mechanical properties 120 



naval, mechanical properties 121 



yellow, red, mechanical properties. ... 121, 122 



Break-down voltages, dielectrics 439-441 



Bricks, mechanical properties 129 



Brightness: black body 335 



blue-, incandescent oxides 336 



candle-, " " 336 



candles/cm 2 , lamps, sky, sun 339 



various sources 338 



electric lights, vacuum and gas-filled... 338 



intrinsic, various sources 334 



photometric 332 



sky, candles/cm 2 339 



sun, " " 339 



temperature: miscellaneous 323 



molybdenum 323 



tantalum 323 



tungsten 322 



Brinell hardness no et seq. 



Britannia metal, mechanical properties 124 



British thermal unit 658 



weights and measures (metric equivalents) .8-1 1 



Brix figure for cane sugar 175 



Bronzes, Tobin, Victor, phosphor, miscellaneous. 120-123 



Brownian movement 553 



Building materials, reflecting power 383 



c, 2. 99796X io 10 cm/sec, velocity of light 74 



c' , 2.99779 x io 10 cm/sec, electromagnetic value.. 74 



c, powers of 103 



a, radiation constant 107 



c 2 , " " 107 



Cp/Cv, gases 293 



Cadmium red line, wave length, international primary 



standard 104 



Calcite data 104 



grating space 91, 96 



Calcium, interstellar 644 



Calendar, Julian (day) 603 



perpetual 603 



Calorie 658 



Calorie^, definition 86, 87 



Candle: (general) 333. 658 



energy from 336 



foot- 333 



meter- 333 



spherical 333 



standards, American 334 



Bougie decimale 334 



English sperm 334 



International 334 



pentane 334 



stellar magnitude of 623 



Capacity, carrying, covered copper wire 416 



electrical, equivalents 397 



specific inductive: crystals 447 



gases, f(t, p) 442 



liquefied gases 445 



liquids 443-445 



solids 446 



standard solutions . . . 446 



Carat, metric 658 



Carboloy, mechanical and physical properties 654 



Carbon dioxide, compressibility 145 



steels, heat treatments 112 



mechanical properties 112 



Carcel unit 334 



Carrying capacity, covered copper wire 416 



Cast iron, properties of malleable 657 



Castor oil, density, viscosity 206 



Cathode rays 536, 537 



Cells, volta, e.m.f. 398 



Westoa , xlix 



