INDEX. 



351 



Energy from candle 



Equation of time 



Equilibrium, radioactive 



Equivalent, electro-chemical: elements 



ionic . 



silver 

 Equivalent, mechanical, of heat . . . 

 Energy, data relating to solar . . . 

 Entropy equation constant .... 



Errors, probable 



Ethyl alcohol, specific gravity of aqueous 



Ettinghausen effect 



Eutectic mixtures, melting-points . . 

 E.\pansion, thermal: cubical, crystals . 



gases . 



liquids 



solids . 

 linear, elements 



various 



gas 



Explosives, composition, etc 



E.xponential functions: e^, e-^. their logs 



log. e^, *=o-io . 



e-r^, e—-^'-, their logs 



e j'^, e <i"-r. their logs 



. 178 



. no 



. 337 



. 301 



. 302 



261,301 



. 237 



Sl-183 



. 342 



S6-S9 



. 98 



. 334 



222, 226 



334 



336 



335 



334 



332 



333 



164 



211 



e^+x-^ 



, their logs 



41 



i " " • 41 



diffusion integral ... 60 



gudermanians .... 41 



hyperbolic sines . . .41 



cosines . . 41 



cotangents . 41 



tangents . . 41 



logs, hyperbolic sines . 41 



cosines . 41 



cotangents 41 



tangents . 41 



probability integral . 56, 57 



Ey^, sensitiveness of, to radiation 180 



Fabry-Buisson, standard arc Fe wave-lengths . 172 



Factorials n/ 1-20 47 



gamma function, ii=i to 2 62 



logarithms, i-ioo 40 



Fechner's law 180 



Field: earth's magnetic field, components of iii-n? 

 magnetic, behavior of metals in . 315-325 



resistance of metals in 333 



rotation of plane of polarization 326-33 1 



thermo-, galvanometric effects . . . 334 



Films, thin: thickness, colors, tension of . 145-146 



Fluorite: index of refraction 186 



Formulae, conversion: dynamic units .... 2 



electric " 3 



fundamental 2 



geometric 2 



heat 3 



magnetic 3 



see Introduction. 



Fraunhofer lines, wave-lengths of i77 



Freezing mixtures 230 



Freezing-points, lowering of, by salts in solution . 227 

 Frequency, oscillation constant, wireless tele- 

 graphy 298 



Friction, coefficients of 126 



Fuels, heats of combustion of 210 



Functions: circular arguments (°') 32 



(radians) ... 37 



exponential 48-61 



factorials 40,47,62 



gamma 62 



hyperbolic 41 



Fundamental units 2 



Fusion, latent heat of 216 



Fusion of wires, carrying capacity 279 



Galvanometric effects of magnetic field . . . 334 



Gamma function 62 



Gas constant _ 342 



Gases: absorption of, by liquids .... 142, 144 



atomic weights 301 



compressibility of 76-78 



conductivity, thermal 207 



critical data for 231 



Gases: densities 91 



dielectric constants 309,310 



diffusion 140 



expansion of 164-168 



expansion, thermal 236 



heat, conductivity for 207 



indices of refraction I93 



magnetic susceptibility 332 



magneto-optic rotation 330 



refractive indices of i93 



sound, velocity of, in 102 



solubility of 142, i44 



specific heats 243 



thermal conductivity 207 



thermal expansion 236 



viscosity of 136 



volume of (1-I-0.00376O .... 164-16S 



Gas thermometry 244-247 



Gages, wire 283 



Geodetic data 108 



Geometric units, conversion factors for ... 2 



Glass: indices of refraction 184 



silica, specific heat 240 



transmissibiUty of Jena 199 



various . . . 201-202 

 electric resistance, temp, variation . . 282 



Glass vessels, volumes of 11 



Gravitation constant 109 



Gravity, acceleration of 104-106 



correction to barometer 120 



Gudermanians 41 



Gyration, radii of 67 



Hall effect 334 



Hardness 73 



Harmonics, zonal 64 



Heat: combination, heat of 212 



combustion: coals 210 



explosives 21 r 



fuels liquid 210 



peats 110 



conductivity for: gases 207 



liquids 207 



salt solutions .... 207 



solids 20s 



solids, high temperature 206 



water 207 



diffusivities . . « 208 



latent heat of fusion 216 



vaporization . .214,254-259 



mechanical equivalent of 237 



specific: elements 238, 240 



gases 243 



liquids 241 



mercury 239 



minerals 242 



rocks 242 



solids 241 



vapors 243 



water 239 



Heating effect, radium 337 



" Heat, specific," of electricity 268 



Hefner photometric unit 178 



Heights determinations of by barometer . . . 169 



Helium, — relation to radium . 337 



Horizontal intensity of earth's field . . . . nS 



secular change ns 



Humidity, relative 160 



Humidity term, o.378e 161 



Hydrogen thermometer 244 



Hyperbolic cosines, natural 41 



logarithmic 41 



Hyperbolic cotangents, natural 41 



logarithmic .... 41 



Hyperbolic sines, natural 41 



logarithmic 41 



tangents, natural 41 



logarithmic 41 



Hysteresis: soft iron cable transformer . . .322 



wire 322 



steel, transformer 32S 



various substances 324 



Iceland spar, refractive index of 186 



Ice-point on thermodynamic scale 247 



Inclination (dip) of magnetic needle . . . .113 



secuar change of Ii3 



Index of refraction: alums 187 



crystals 185-190 



fluorite 186 



gases and vapors .... I93 



