Draper point62 Drude593678738754 Drude's theory of metallic conduction593 Dufour effect181 Dulong and Petit587778153331564640724726767 Dulong and Petit's law77163 Dulong and Petit's law, deduction of, from kinetic theory153 Dulong and Petit's law, illustration of77 Dumas467 Dunoyer121 Dusen3745 Dushman manometer212 Dushmann212708772773 Earth's crust, conductivity of612 Earth, age of the614 Earth, temperature inside the612 Eckefots624 Eddington696833 Edlen624 Efficiency of engines228 Efficiency ratio250 Effusion, molecular192205 Effusion, practical applications of the principle of205 Effusion, theory of192 Effusion, thermal212 Effusion, through a narrow opening453 Egerton455478 Egy599 Ehrenfest358707 Eigen-value882 Eigenfunction874882 Eigenfunction, rotational874 Einstein185188189191222298299644671726727746756835880888891898 Einstein function727 Einstein function, tables of872 Eldridge141147 Electrolux490 Electromagnetic waves, chart of621622 Electromotive force, of Clark cell346 Electromotive force, of Daniell cell344 Electromotive force, of reversible galvanic ceils344 Electron762 Electron, affinity of halogens831 Electron, charge on863 Electron, chemical constant of773 Electron, weight factor of773 Electrons from heated solids772 Elements, occurrence of923—927 Ellett145 Elliot723 Emission, of electricity from hot bodies772 Emission, total649 Emission, total, on one side627 Emissive power626 Energy as a fundamental quantity298 Energy of oscillator in a field of radiation868 Energy of rotation704 Energy of vibration705 Energy relations in a reaction782 Energy, conservation of289 Energy, discontinuous changes in295 Energy, distribution of, in the spectrum of a black body655 Energy, distribution of, in the spectrum of the son696 Energy, due to rotation704 Energy, exchange of, between radiation and matter629669 Energy, forms of288 Energy, free342345 Energy, intrinsic, variation of, with volume329 Energy, kinetic, law of equipartition of149 Energy, molecular and atomic151 Energy, null-point, expression for721755 Energy, spectral distribution of663 Energy, total, in a thermodynamical system288 Energy, unavailable320 Engine, 'National' gas261 Engine, Carnot's230 Engine, Clerk261 Engine, diesel257 Engine, Diesel, four-stroke262 Engine, efficiency of228 Engine, fuels for262 Engine, irreversible239 Engine, jet propulsion277 Engine, Otto252 Engine, reversible238 Engine, semi-Diesel or hot bulb260 Engine, two-stroke260 Enskog164169178179913 Entropy and probability375 Entropy and unavailable energy320 Entropy of a mixture of gases316 Entropy of a perfect gas315 Entropy of a system313 Entropy of steam247 Entropy, absolute, of a monatomic gas391750 Entropy, absolute, of diatomic gases764 Entropy, absolute, of polyatomic gases764 Entropy, change of, in irreversible process313 Entropy, definition of307 Entropy, effect of nuclear spin on761766 Entropy, evaluation of, from the three statistics747 Entropy, increase of319 Entropy, increase of, due to diffusion of two gases318 Entropy, increase of, during conduction or radiation of heat314 Entropy, increase of, in irreversible processes314 Entropy, increase of, when a gas expands into vacuum314 Entropy, molar, calculation of, by Lewis's method777 Entropy, physical concept of321 Entropy, principle of increase of319 Entropy, statistical interpretation of388 Entropy, theorem concerning319 Entropy—temperature diagram245 Equation of state for a perfect gas396 Equation of state of Beattie and Bridgman423 Equation of state of Bert helot422 Equation of state of Dieterici423 Equation of state of Fowler424 Equation of state of K. Onnes397 Equation of state of Reinganum424 Equation of state of Saha and Bose423 Equation of state of Van der Waals421 Equation of state, definition of396 Equation of state, experimental study of431 Equation of state, reduced429 Equation, Clapeyron's325353 Equation, Clausius's latent heat355 Equation, fundamental344 Equation, Gibbs — Helmholtz344 Equilibrium constant785788 Equilibrium of physical and chemical systems339 Equilibrium, chemical, application of thermodynamics to783 Equilibrium, chemical, between and 788 Equilibrium, chemical, between and S779 Equilibrium, chemical, between and 792 Equilibrium, chemical, calculation of new, from old797 Equilibrium, chemical, illustrations of788 Equilibrium, thermodynamical, general conditions of281 Equilibrium, thermodynamical, of a heterogeneous system805 Equipartition of energy845 Equipartition of energy, law of149 Ericson624 Esson783 Eucken334466602611706712715734740769772 Eucken and Donath466 Eucken and Schwers74 Eumorfopoulos and Rai505 Eutectic temperature486 evaporation463 Evaporation, cooling produced by492 Evaporation, thermodynamics of353