350 



INDEX. 



Conductivity, thermal: salt solutions .... 207 



solids 205 



solids, high temperature . 206 



water 207 



Contact differences of potential .... 264-267 



Convection, cooling by 252-253 



Conversion factors for work units 237 



Baume to specific gravities . . . 81 



Cooling by radiation, perfect radiator . . . .251 



and convection . . 252-253 



Copper wire tables 284-291 



English units 286 



metric units 289 



Cosines, circular natural 32, 37 



logarithmic 32, 37 



hyperbolic natural 41 



logarithmic 41 



Cotangents, circular natural 32,37 



logarithmic .... 32, 37 



hyperbolic natural 41 



logarithmic 41 



Critical data for gases 231 



Crushing, resistance to: bricks 68 



concretes 68 



stones 68 



timber, wood .... 69 



Crystals: dielectric constant 314 



elasticity 74~75 



expansion, cubical thermal .... 234 

 indices of refraction . . . .' . 188-190 

 transmissibility for radiation . . . 200 



Cubical thermal expansion: gases 236 



liquids . . . .235 



solids 234 



Curie unit of radioactivity 341 



Current, absolute, measures 261 



Cutting tools, lubricants for 126 



Cyclic magnetization, energy losses in . . 322-325 



Declination, secular change of magnetic . . . in 



Degrees, length of, on earth 108 



Demagnetizing factors for rods 323 



Densities in air, reduction to vacuo 82 



Density: air: values of A?/ 60 162 



alcohol: aqueous ethyl .... 98-99 



methyl 100 



alloys 87 



aqueous alcohol 98-99 



cane-sugar 100 



salt, acid, basic solutions . . 92 



, sulphuric acid 100 



, chemical elements - 83, 91 



earth 108 



gases 91 



inorganic compounds 219 



liquids 90 



mercury 97 



metals 83 



minerals 88 



organic compounds . . . . . , - . 223 

 water . 94-96 



. woods . 85 



Dew points 148 



Dielectric constant: (specific inductive capacity) 



calibration, standards for .313 



crystals 314 



gases, atm. pressure . . . 309 

 pressure coef. . . .310 

 temperature coef. . 309 



liquids 310-311 



temperature coef. .312 



solids 313 



Dielectric strength: air: alternating potential 294 

 steady potential . . 294 

 kerosene .... 296 

 large spark-gaps . . 295 

 pressure effect . . 295 

 various materials . 296 

 Difference of potential: 



..cells: double fluid 263 



secondary 263 



single fluid 262 



standard 261, 263 



storage 263 



contact: liquids-liquids in air . .264 

 metals in salt solutions . 267 

 salts with liquids . . . 264 

 solids-solids in air . . . 266 



Peltier 271 



thermo-electric 268-270 



platinum couples 269 



Differential formulae .......... 12 



Diffusion: aqueous solutions, water .... 138 



gases and vapors: coefficients . . .140 

 metals into metals ....... 140 



vapors ........... 139 



Diffusion integral ........... 60 



Diffusivities, thermal ......... 208 



Dip, magnetic ............ 113 



secular change ....... 113 



Dispersion of Kerr Constant ....... 331 



Dynamical equivalent of thermal unit . . .237 



e, value of ............. 14 



ex, e-x, and their logarithms ....... 48 



log. e&, x, from o to 10 ......... 48 



e x2 e-&, and their logarithms ....... 54 



e**, ~\ x , and their logarithms ...... 55 



*' 



Q 



their logarithms 



55 



an d their logarithms ....... 41 



Earth: data 108 



densities 108 



distance from sun 109 



length of degrees 108 



miscellaneous data 108 



Elasticity: crystals 74-75 



moduli of rigidity 71 



modulus, Young's 72 



Electric lights, efficiency of 179 



Electrical conductivity: alloys .... 277-279 

 alternating current, effect of 297 

 magnetic field, effect of . . 333 

 Electrical resistance: see Conductivity. 



metals and alloys, low temp. 280 

 ohm, various determinations 272 

 specific: metallic wires . .273 



metals 274 



temperature coefficients . 276 

 temperature effect, glass . 282 



Electricity, specific heat of 268 



Electric units, dimensional formulae .... xxviii 



Electrochemical equivalents 301, 261 



silver . . . 301, 261 



Electrolytic conductivity: 302-308 



dilute solutions .... 302 

 equivalent .... 305-308 



ionic 308 



specific molecular .... 303 

 limiting values 304 

 temp, coef . . 304 



Electromagnetic system of units xxxi 



Electromagnetic / electrostatic units = v ... 260 



Electromotive force: cells: double fluid . . . 263 



secondary .... 263 



single fluid .... 262 



standard . . 261, 263 



storage 263 



contact 264-266 



liquids-liquids in air . . 264 

 metals in salt solutions . 267 



Peltier 271 



salts with liquids . . . 264 



solids-solids in air ... 266 



thermo-electric . . 268-270 



(platinum) . 269 



Elementary "Wirkungsquantum" . . . 251,342 



Electrons, miscellaneous data 342 



Elements: atomic weights 301 



boiling-points 218 



compressibility 73 



conductivity, thermal 205 



densities 83, 91 



electrochemical equivalents . . .301 



hardness 73 



melting-points 217 



periodic system 343 



resistance, electrical .... 274-276 



specific heats 238, 240 



spectra (prominent lines) .... 172 



thermal conductivities 205 



expansion, linear .... 232 

 cubical, gases . . 236 



Elliptic integrals 66 



Emanation, radium 341 



Emission of perfect radiator 251 



