INDEX 



669 



PAGE 



• 333 



• 333 

 . 333 



334 

 333 



reflecting power, 



standards 



Bougie 

 candle. 



Light : luminosity 



lux 



mechanical equivalent 



photometric standards 



units 



polarized, reflection of /••••,■; 376 



rotation of plane hy substances.. 390 

 (magnetic) 476-480 



metals 377~38o 



pigments • 3" • 



powders 381-382 



scattered light 379 



temperature variation W. . 380 



reflection of, f (index of refraction) 376 



formulae, Fresnel 376 



sensitivity of eye to 330-332 



minimum energy 335 



decimale 334 



American 334 



Hefner 334 



international 334 



pentane 334 



sperm, English 334 



Carcel unit 3 34 



Waidner-Burgess 334 



transparency to: air, moist 392 



atmosphere. 389, 392, 555, 608 



crystals 390 



dyes 385 



gases, infra-red 393 



glasses 3 8 4-388 



colored 386, 388 



ultra-violet 387 



solids, infra-red 393 



steam 392 



water 392 



sea 652 



ultra-violet .... 389 



velocity of (2.99796 x io 10 cm/sec.) 74 



wave lengths: cadmium standard 347 



elements 3 55 



Fraunhofer lines 346 



neon lines 349 



solar standards 350-353 



standard, iron 347~349 



solar 350-353 



Lights: {see also under lamps) 



brightness in candles/cm 2 of various. .338, 339 



efficiency of various electric 337 



photographic efficiency of some 344 



temperature, brightness 33| 



color 338 



visibility of white 34o 



Light-year 6<n 



Limits, spectrum series 5° 2 



Lines, resonance (spectroscopy) 504 



ultimate " 504 



Liquids: absorption of gases 221 



capillarity of 222-223 



combustion heats 307-308 



compressibilities '54 



conductivity, thermal 276-277 



density iS9. i°S. 166 



BaumO scale '5° 



mercury, f(t) l6 9 



water, " l6 °- ID ° 



dielectric constants 443- 445 



strengths 44 1 



diffusion, aqueous solutions 215 



expansion coefficients 283 



magnetic optic rotation 47° 



susceptibility 475 



potential differences with substances. .399-400 



refractive indices 37°-372 



sound velocity «90, 191 



sea water °S 2 



specific heats 290-291 



surface tensions' 222, 22 3 



276-277 



PAGE 



Logarithms, anti, four-place z £l\l 



four-place, 100-999 zo-^7 



1000-2000 2 4 25 



Longitudes of selected stations 565-567. 581-589 



Long-wave transmissions of energy... 393 



Loschmidt's number, 2.705 x io 19 cur ■' 107. 659 



Loudness level, musical instruments >94 



noises • • • ' 93 



Lowering of freezing points by salts 267, 268 



204 

 333 



Lubricants (I. C. T., 2, 164)... 



Lumen 



Luminescence (I. C. T., 5, 386) 

 Luminosity 



black-body 



molybdenum 



tungsten, .665/i, .467/*- - - 



us. color temperature 3'° 3»9 



Lunar parallax 



rotation (history) 

 Lux 



thermal conductivity 



cubical expansion 



vapor pressures 



333 

 335 

 323 

 322 



373 

 333 



M X-ray spectrum 



Mache radioactivity unit 



54i 

 520 



283 



225-230 



viscosities, absolute 205-209 



specific 210-212 



Liter, equals 1.000027 dm 3 75 



Logarithmic factorials 4 ° 



.xxxii 



575 

 - 403 

 . 463 



, 469 



. 465 

 464 



474 

 474 

 470 



Machinability of various materials u = 7 



Maclauren's theorem , •? 



Magellan, clouds of • 



Magnalium: mechanical properties ''7 



Magnetic constants of sun. . . 

 permeability . . • 



poles of earth 



properties: (general) 



atomic, definition 



cobalt, o°, 100° C. 



alloys 



corrections for ring specimens 



critical temperatures ■ 



Curie point 



demagnetizing factors, rods., 



diamagnetic elements 474 



diamagnetism, definition 4°3 



temp, variation. 474 



elements 474 



Ettinghausen effect 4°2 



ferromagnetism, definition ... 403 

 fiux. flux density, definition... 463 



galvanometric 4°- 



Hall effect, f(t) 463. 482 



hysteresis 463. 470-473 



induction 463 et seq. 



iron and steel 4"4 



. pure 



soft, o°, 100 C. . 

 very weak fields . . . 

 wrought (Lowmoor) 

 Joule 



464 

 468 

 465 

 469 

 463 



Leduc effect 482 



magnet steel 



465 



I0.1&IICL am. „- 



magnetic resistance 4°» 



delini- 



469 



476 



463 



magnetite 

 magneto-optic rotation, 



tion 



strict ion, definition. 



maxwell, definition 463 



molecular 4''3 



Nernst effect 4»2 



nickel, o°, 100 C 4«'9 



paramagnetism: definition ... 403 

 elements, f(t) 474 



permalloy ■ • • • • 472 



permeability xxxii, 463 et seq. 



definition 4^3 



ring specimens, corrections.. 471 



sheets, electrical 464 



steel: 0°, 100 C 468 



magnet 4°5 



manganese, Hadtields.. 469 



saturation values 469 



tool, Vicker's 469 



transformer, weak fields. 465 



Steinmetz constant 473 



striction, magneto-, definition. 463 



susceptibility 474. 475 



definition .... 463 

 temperature changes. 468, 469, 475 



, critical 475 



thermomagnetic effects 482 



