350 



INDEX. 



Conductivity, thermal: salt solutions • • • • ^°3 



solids ^"5 



solids, high temperature . 20& 



water •_207 



Contact differences of potential .... 2O4207 

 Convection, cooling by . . . . . • • 252 25^ 

 Conversion factors for work units . . . . -2^7 

 Baume to specific gravities ... 01 

 Cooling by radiation, perfect radiator . . • • ^Si 

 and convection . . 252-25^ 

 Copper wire tables ... ..... 284-291 



English units 280 



metric units 289 



Cosines, circular natural 32, 37 



logarithmic 6-i,il 



hyperbolic natural 4i 



logarithmic 4i 



Cotangents, circular natural 32, 37 



logarithmic .... 32, 37 



hyperbolic natural 4i 



logarithmic 4i 



Critical data for gases 231 



Crushing, resistance to: bricks o» 



concretes o» 



stones °° 



timber, wood .... 09 



Crystals: dielectric constant 3i4 



elasticity 74 75 



expansion, cubical thermal .... 234 



indices of refraction 188-190 



transmissibility for radiation . . .200 



Cubical thermal expansion: gases 230 



liquids . . . .235 



solids 234 



Curie unit of radioactivity 34i 



Current, absolute, measures 201 



Cutting tools, lubricants for . 120 



Cyclic magnetization, energy losses in . . 322-325 



Declination, secular change of magnetic . . .111 



Degrees, length of, on earth 108 



Demagnetizing factors for rods 323 



Densities in air, reduction to vacuo 02 



Density: air: values of hy/to 102 



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 ^3. 9i 



earth lo^ 



gases 



91 



Differential formulae 12 



Diffusion: aqueous solutions, water .... 138 

 gases and vapors: coefficients . . .140 



metals into metals 140 



vapors 139 



Diffusion integral ^° 



Diffusivities, thermal 20» 



Dip, magnetic ^13 



secular change ii3 



Dispersion of Kerr Constant . . . . . • -331 

 Dynamical equivalent of thermal unit . . . 237 



e, value of ^4 



ex, e-x, and their logarithms 4» 



log. ex, X, from o to 10 4° 



ex2 e—^^, and their logarithms 54 



efx, e~ j^, and their logarithms 55 



inorganic compounds 219 



liquids 90 



mercury 97 



metals °3 



minerals °° 



organic compounds 223 



water 94-96 



woods °S 



Dewpoints .^- .• • .- ■ • •. • i48 



Dielectric constant: (specific inductive capacity) 



calibration, standards for .313 



crystals 3i4 



gases, atm. pressure . . . 309 

 pressure coef. . . .310 

 temperature coef. . 309 



liquids 310-31 1 



temperature coef. .312 



solids 313 



Dielectric strength: air: alternating potential . 294 

 steady potential . . . 294 



kerosene 296 



large spark-gaps . . . 29s 

 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 ,X ^''^ 



thermo-electric 268-270 



platinum couples 269 



gV'^^ g_ Vt^^ and their logarithms 

 s — . and their logarithms . . . 



55 



41 



41 



ex — e— X .... •• 



2 * 



Earth: data l°l 



densities i°° 



distance from sun I09 



length of degrees 10° 



miscellaneous data 10° 



Elasticity: crystals •. .-. 74-75 



moduli of rigidity 7i 



modulus, Young's 72 



Electric lights, efficiency of • • I79 



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 ..... x^oci 



Electromagnetic /electrostatic units = v . . .260 



Electromotive force: cells: double fluid . . .263 



secondar\- .... 203 



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 30i 



boiling-points 210 



compressibility 73 



conductivity, thermal . . . • • 205 



densities °3. 9i 



electrochemical equivalents . . .301 



hardness 73 



melting-points 217 



periodic system 343 



resistance, electrical .... 274-270 



specific heats ...... 238, 240 



spectra (prominent lines) . . . .172 



thermal conductivities 205 



expansion, linear .... 232 

 cubical, gases . . 230 



Elliptic integrals Jf 



Emanation, radium ^^ 



Emission of perfect radiator ^i'- 



