INDEX 



piles, 26 



Pittsfield, Mass, 105 



Planck's, 3 



platinum, 62, 63, 68, 104, 124, 149, 



150, 207. 296, 298, 301, 304, 308, 



317, 334 

 platinum atoms, 305 

 platinum filament, 130, 235, 333 

 platinum lamps, 296 

 platinum oxide, 150 

 platinum the value, 318 

 platinum wire, 116, 132, 133 

 plutonium, 26 

 Pogg. Ann., 163 

 point centers of force, 258 

 point source, 286 

 Poisson equation, 221 

 polar molecules, 221, 222, 260, 262 

 polar substances, 94 

 polarizability, 61, 224 

 polarization, 223, 230, 266 

 polarized, 224 

 polyatomic films, 331 

 polyatomic layers, 55, 375, 377, 378 

 polymorphic hydrogen, 127 

 positive, 399 

 positive atoms, 393 

 positive ions, 224, 356, 385 

 positive ion evaporation, 351, 352 

 positive valence, 388, 390, 395 

 potassium, 243, 257, 325, 356 

 potassium chloride, 247 

 potassium chlorate, 252, 253 

 potassium hydrogen, 252 

 potassium hydrogen sulfite, 252 

 potassium ion, 245, 255, 257 

 potassium nitrate, 252, 253 

 potassium perchlorate, 250 

 potassium salts, 245 

 potassium sulfates, 245, 255 

 potassium sulfide, 247 

 potential, 352 



potential barrier, 46, 59, 372, 381 

 potential drops, 123, 188 

 potential energy, 39, 61 

 potential gradient, 133 

 powdered talc, 43 



power laws of force, 229 



pseudo-isosteric, 253 



precipitate, 110 



primary valence, 60, 63, 67 



primary valence forces, 62 



principles of the conservation of en- 

 ergy and momentum, 311 



prism, 42, 275 



probaliility coefficients, 75 



probability of evaporation, 58 



Proc. Amer. Inst. Elect. Eng., 152 



Proc. Natl. Acad. Sci., 130, 140, 241 



Proc. Roy. S'oc, 97, 116, 133, 298, 300, 

 323, 350 



propane, 41 



propanol, 83, 84 



propionic, 85 



propionic acid, 230, 231 



proportionality factor, 93 



propyl bromide, 83 



propyl-di-chlor acetate, 82 



protons, 261 



PtOa, 113, 124, 131, 150, 305 



pure hydrocarbons, 237 



pure liquid, 39, 75, 79, 80 



pure solvent, 32 



q, 181, 183, 186, 196, 203 

 q^heat of formation, 184 

 quadricovalent, 244, 255, 256 

 quadrupole, 222, 261, 264 

 tjuadrupole molecules, 260 

 quantum, 4, 6 

 qiiantum change, 5 

 quantum event, 5, 6 

 quantum numbers, 221 

 quantum phenomena, 72 

 quantum physics, 4, 5 

 quantum theory, 3, 221, 263 

 quantum mechanics, 60 

 quantum theory, 64 

 quartz, 125, 317 



R, 297 



R tail, 272 



radial hydrostatic pressure. 111 



radiation, 112, 144, 286, 363 



430 



