314 



INDEX. 



Crystals: dielectric constant 284 



elasticity 77-78 



expansion, cubical thermal . . . .224 

 transmissibili ty for radiation . . . .194 



Current, absolute, measures 251 



Cyclic magnetization, energy losses in . . 294-296 



Declination, secular change of magnetic . . .no 



Demagnetizing factors for rods 289 



Density : air : values of h/76o 160 



alcohol : aqueous ethyl 98 



methyl 98 



temperature variation . . .100 



alloys 89 



aqueous alcohol . 98 



salt, acid, basic solutions . . 92 



chemical elements 85, 91 



earth 108 



gases 91 



liquids 90 



mercury 97 



metals 85 



organic compounds 215 



water 95-96 



woods 87 



Dew points 156 



Dielectric constant: (specific inductive capacity) 



calibration, standards for . 283 



gases, atm. pressure . . 279 



pressure coef . . . 279 



temperature coef. . 280 



liquids 280 



temperature coef. . 282 



solids 283 



Dielectric strength: air: alternating potential . 248 

 steady potential . . . 248 



kerosene 250 



large spark-gaps . . . 249 

 pressure effect . . . 249 

 various materials . .250 

 Difference of potential: 



cells: double fluid 253 



secondary 253 



single fluid 252 



standard 251, 253 



storage 253 



contact: liquids-liquids in air . 254 

 metals in salt solutions 257 

 salts with liquids . . 254 

 solids-solids in air . .256 



thermo-electric 258 



platinum couples 259 



Differential formulae 12 



Diffusion: aqueous solutions, water 136 



gases and vapors : coefficients . . .138 



metals into metals 138 



vapors 137 



Diffusion integral 50 



Dip, magnetic 112 



secular change 112 



Dynamical equivalent of thermal unit . . . .227 



e, value of ia 



e*, e~*, and their logarithms 43. 47 



log. f, x from 10 to 30 44 



e**,e-**, and their logarithms 45 



**. fT**, and their logarithms 46 



e^~, "**'*, and their logarithms .... 46 



, and their logarithms 41, 42 



2 



e*-e 



39,40 



Earth : densities 108 



miscellaneous data 108 



Elasticity: crystals . 77, 78 



moduli of rigidity 74 



modulus, Young's 75 



Electrical conductivity: alloys .... 266-268 

 alternating current, effect of 269 

 magnetic field, effect of . s 306 

 Electrical resistance: see Conductivity. 



metals and alloys, low temp. 264 

 ohm, various determinations 261 

 specific: metallic wires . . 262 



metals 263 



temperature effect, glass . 285 



Electricity, specific heat of 258 



Electric units, dimensional formulae xxvi 



Electrochemical equivalents 270, 273 



silver 351 



Electrolytic conductivity: 272-278 



dilute solutions 272 



equivalent j . . . . 375-278 



ionic 278 



specific molecular .... 273 

 limiting values 274 

 temp. coef. . 274 



Electromagnetic system of units xxix 



Electromagnetic/electrostatic units v . 247 



Electromotive force: cells: double fluid . 253 



secondary . . 253 



single fluid . . 252 



standard . . . 251 253 



storage . . . 253 



liquids-liquids in air 254 



metals in salt solutions 257 



salts with liquids . . 254 



solids-solids in air . 256 



thermo-electric . . 258 



(platinum) 259 



Elements: atomic weights ........ 270 



boiling-points 210 



compressibility 76 



conductivity, thermal 199 



densities 85, 91 



electrochemical equivalents . . . .270 



hardness 76 



melting-points 209 



resistance, electrical 263 



specific heats 228 



spectra (prominent lines) . . . .170 



thermal conductivities 199 



expansion, linear . . . .222 

 cubical, gases . . 226 



Elliptic integrals 57 



Emission of perfect radiator 238 



Equivalent, electro-chemical: elements . . .270 



ionic 272 



silver 251 



Equivalent, mechanical, of heat 227 



Energy, data relating to solar 179 



Ethyl alcohol, specific gravity of aqueous ... 98 



Ettinghausen effect 307 



Expansion, thermal: cubical, crystals . . . .224 



gases 226 



liquids .... 225 



solids 224" 



linear, elements .... 222 



various 223 



perfect gas 162 



Explosives, composition, etc 203 



Exponential functions: *, "*, their logs. . . 43, 47 

 log. e*. *= 10 to 30 . . 44 

 * a , e-**, their logs . . . 45 



**, ~** " "... 46 



, their logs. 46 



their logs. . . 41, 



-* i 



diffusion integral . . 50 



hyperbolic sines . . 39 



cosines . 41 



logs, hyperbolic sines 40 



cosines 42 



probability integral . 47, 48 

 Eye, sensitiveness of, to radiation ..... 178 



Fabry-Buisson, standard arc Fe wave-lengths . 170 

 Factorials, n ! ............ 38 



Fechner's law ........... .' 178 



Field: earth's magnetic field, components of 110-115 



magnetic, behavior of metals in . . 286-296 



resistance of metals in ..... 306 



rotation of plane of polarization 297-304 



thermo-, galvanometric effects . . 307 



Films, thin: thickness, colors, tension of . 142, 143 



Fluorite: index of refraction ....... 184 



Formulae, conversion: dynamic units .... a 



electric " . ..... 3 



fundamental ..... a 



geometric ...... a 



