INDEX. 



351 



Energy from candle 178 



Equation of time no 



Equilibrium, radioactive 337 



Equivalent, electro-chemical: elements . . . 301 



ionic 302 



silver . . 261,301 



Equivalent, mechanical, of heat 237 



Energy, data relating to solar .... 181-183 



Entropy equation constant 342 



Errors, probable 56-59 



Ethyl alcohol, specific gravity of aqueous ... 98 



Ettinghausen effect 334 



Eutectic mixtures, melting-points . . . 222, 226 

 Expansion, thermal: cubical, crystals .... 334 



336 



.8 .... 335 



334 



linear, elements . . . .332 

 various .... 333 



gas 164 



Explosives, composition, etc 211 



Exponential functions: ex, e*, their logs ... 48 

 log. e%, x=o-io .... 48 

 e^' 2 , e~ xZ , their logs . . 54 



X/7T *^7T 



e~t" x , e s~x, their logs 55 



, their logs . 



diffusion integral 

 gudermanians . 

 hyperbolic sines 



60 



cotangents 

 tangents . 

 logs, hyperbolic sines 



cosines 



cotangents 41 



tangents . 41 



probability integral . 56, 57 



Eye, sensitiveness of, to radiation 180 



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



Factorials nl 1-20 47 



gamma function, =i to 2 62 



logarithms, i-ioo 40 



Fechner's law 180 



Field : earth's magnetic field, components of 1 1 1-117 

 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 177 



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 193 



magnetic susceptibility 332 



magneto-optic rotation 330 



refractive indices of 193 



sound, velocity of, in 102 



solubility of 142, 144 



specific heats 243 



thermal conductivity 207 



thermal expansion 236 



viscosity of 136 



volume of (1+0.003760 .... 164-168 



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 



transmissibility of Jena 199 



various . . . 201-202 

 electric resistance, temp, variation . . 282 



Glass vessels, volumes of n 



Gravitation constant 109 



Gravity, acceleration of 104-106 



C9rrection 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 211 



fuels liquid 210 



peats iio 



conductivity for: gases 207 



liquids . . .- . . . 207 

 salt solutions .... 207 



solids 205 



solids, high temperature 206 



water 207 



diffusivfcies 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 . . . .115 



secular change 115 



Humidity, relative 160 



Humidity term, 0.378* 161 



Hydrogen thermometer 244 



Hyperbolic cosines, natural 41 



logarithmic 41 



Hyperbolic cotangents, natural 41 



logarithmic .... 41 



Hyperbolic sines, natural 4! 



logarithmic 41 



tangents, natural 41 



logarithmic 41 



Hysteresis: soft iron cable transformer . . .322 



wire 322 



steel, transformer 325 



various substances 324 



Iceland spar, refractive index of 186 



Ice-point on thermodynamic scale 247 



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



secuar change of 113 



Index of refraction -.alums 187 



crystals 185-190 



fluorite 186 



gases and vapors . . . .193 



