INDEX 



66 5 



PAGE 



Earth: mountain elevation 569 



ocean areas 569 



depths 569 



orbital velocity 570 



pressures, interior 569 



rotation, variation of 573 



rotational energy 570 



standard time 573 



thermal gradient (wells) 569 



tidal frictions 570, 573 



velocity at equator (rotational) 602 



in orbit 570 



Earthquakes, wave velocity 567 



Eberhard effect (photography) 345 



Eccentricity of star orbits 629 



Eclipsing binaries 629 



Efficiency, luminous, of lamps 337, 338 



of black bodies 335 



Elastic constants of earth 569 



limits (mechanical data) 1 10 et seq. 



moduli 136 



Elasticity : crystals 138, 139 



metallic elements 1 40 



Electric arcs (I. C. T., 6, 51) 



conductivity: (see also resistivity) . .408 et seq. 

 alloys (temp. 



coef.) 409, 414, 415 



auxiliary computing table... 408 



dielectrics 418 



high-frequency 449 



pressure effects 412 



super, of metals 433 



tension effects 414 



light efficiencies 337 et seq. 



equivalent of heat 86, 87 



equivalents 397 



, quantity 397 



series, tribo- 408 



standards, international xlvi 



units, xlv 



Electricity, piezo 448 



Electrochemical equivalents 431 



, definition 658 



Electrolytic conductivity: (general) 431 et seq. 



electrochemical equiva- 

 lents, normal solu- 

 tions 432 



equivalent : 



acids, aqueous solu- 

 tions 435 



bases 435 



electrochemical .... 431 



ions, separate 438 



salts 435, 437 



hydrolysis, ammonium 



acetate 438 



ionization of water 438 



#18 432 



molecular, specific 433 



temp. coef. . . 434 



A 434 



Electromagnetic dimensional formulae xxxvii, xxxix 



Electromotive force: pressure effects 407 



thermo- 401 et seq. 



, against Pb 40 1 



neutral points 401 



voltaic cells 398, 400 



Electron: (general) 492 



affinity of elements 549 



atomic weight, 5.5x10-* 105 



binding energies, ionized 498 



neutral 497 



charge, 4.77X10- 10 e.s.u 88, 92, 103 



specific, e/m 103 



collisions in gases, elastic 511 



inelastic 5 ' 1 



ionizations 511 



configurations 488, 504 



diffusion 547 



emission: coated filaments 548 



elements, hot solid 547 



Laue's equation 547 



photoelectric effect 547, 548 



Richardson's equation 547 



Th on W, monomolecular films. 547 



tungsten 321 



work function 547 



PAGE 



Electron: mass, 9.0X icr 25 g 105 



volt energy, speed 107 



volts 502 



wave lengths 1 07 



Electrostriction 448 



Elements: atomic numbers 483 



weights 483 



boiling points 252 



compressibility 140 



densities 159, 161 



diameters 548 



earth, abundance in 614 



electron affinities 549 



configurations 488 



emissions 547 et seq. 



expansion, thermal 280 



hardness 137 



heats, latent, of fusion 288 



vaporization 295 



specific 285-287 



ionizing potentials 499 



melting points 252 



meteorites, abundance in 614 



spectra 355 



stars, abundance in 615 



sun's atmosphere, abundance 



in 612, 613, 614 



thermal expansion 280 



Elliptic integral 71 



Emanation 520 



, heat due to 5 2 5 



vapor pressure 5 2 1 



E.m.f. (see under electromotive forces) 

 Emission, electron (see electron emission) 



Emissivities: (general) 320 et seq. 



miscellaneous 3 2 4 



nickel, soot-covered 3 2 4 



tantalum 3 2 3 



tungsten 3 2 L 3 22 



Energy : black-body radiation 3 1 3 - 3 ! 7 



earth, rotational 57o 



equipartition in stars 626 



minimum for light sensation 335 



vs. matter 645 



English abbreviations 2 



sperm candle 334 



Equation of time 6 °7 



Equivalent, mechanical, of heat °° 



light 335 



Erg, definition 6 59 



Erickson value ll ° 



Error, probable, least squares 59 



Ethylene, compressibility : I4S 



Ettinghausen galvanomagnetic effect 402 



Eulerian 2nd integral 64, 65 



Eutectics, lime-alumina-silica compounds 266 



, melting 



points. 266 



Evaporation rates 223 



: tungsten 223 



Expansion, thermal: elements 280 



gases 284 



high temperature 282 



liquids 283 



miscellaneous 281 



oil, petroleum 155 



solids 282 



Explosives 309. 3 10 



Exponential functions: (general) 48-63 



e, base of natural logarithms, 



2.71828 14 



e* x , e~ x and their logs, 



x=o to 10 48-53 



x fractional 56 



e* 2 , e-* 7 , logs, 



3=0.1 to 5.0 54 



e irx/i f c -ir*/4 # logs, 



x=i to 20 55 



e irh/4 t e ~vWi f logs, 



1=1 to 20 55 



e x +e- x e x — e~ x . ., . 



— : , — - — and their 



2 ' 2 



logs 4i 



integral 62, 63 



