342 



INDIA 



ElectrificatioD, Discharge of, 11 

 Distribution on conductors, 28 

 Occurrence of the two kii.cU 



together, 10 



on outer surface only of conductors, 9 

 positive and negative, 2, 25 

 Quantity of, 2-1 

 Units of, 28, 32 



Electrified bodies, action between, 2 



Electric action in the medium, 48 



current produces equal positive and 



negative, 28 



deformation of crystals, 157 

 displacement (Maxwell). 49 

 double refraction (Kerr effect), 144 

 expansion in glass, 142 

 expansion of liquids, 143 

 field, 32 



intensity of field, 32 

 intensity in dielectric, 103 

 mechanical action, Law < 

 strain and intensity, Relations be- 

 tween, 87 

 strain, 48 



strain, direction of, 60 

 strain, measurement of, 52 

 strain, molecular hypothesis of, 58 

 strain, variation of, with distance, 58 

 waves, Drnde's experiments OB 

 specific inductive capacity with, 

 131 



Electrical level, or Potent i. 



Electricity, Atmospheric, 95 



Electro-magnetic waves, 49 



Electro magnets, 178, 182 



Electrometer, Dolasalek, 89 

 Harris's attracted disc, VI 

 Piezoelectric, 156 

 Quadrant, 87 

 Thomson's trap door, VI 



Electron theory of magnetism, 297 



theory of rotation of plane of polari- 

 sation, 328 



Electrophone, 14 



Electroscope, gold-leaf, 4 

 gold-leaf, capacity of, 97 

 gold-leaf, detection of charge by, 6 

 gold-leaf, use of, to indicate equality 

 of charge, 24 



Energy, dissipation of, in a hysteresis 



cycle, 199 

 distribution of, in a dielectric 



104 

 distribution of, in an electric system, 



of charge in a dielectric, 103 



of a system, 44, 70 



per c.c. in magnetised body with 



constant permeability, 248 

 supplied during a cycle when perme 



ability varies, 248 

 Equipotentiiil surfaces, -I : 

 Ewiog's model (molecular theory of 

 magnetism), 195 



I.,..: ..-..; : i: . .!. I |.il. 



meability, 268 



FARADAY, dbcovery of specific indi. 



capacity, 99 

 experiments with cobalt as a magnet, 



| , 



with para- and dia- 



on action of magnetism on light, 820 

 Faraday's " butterfly -net " experiment, 



M 

 Ferro-magnetios, 207 



32 



electric, force on small body in, 61 

 electric, intensity of, 82 

 Fleming and Dews experiments on 



sosceptibiht r of oxygen, 295 

 Flux of force in magnetic field. 216 

 Force on a small body in electric field, 



61 

 Forces between electrified bodies, 



bodies, 258**,. 

 Kranklin'sjar, 22 



Friction*! Bnohine* 





,...,., 



Gauss, proof of in 



in pyroelcc 

 square law (mag- 



applied to tube* of force, 84 



. . , .Ml. :. . 



Ulaas* gf iaaalalor 4 

 ejld 



in. 142 



UuM.|cafclcctr'uco|*.4 

 capacity of. V7 

 detection of change by, 6 



HAM MI. ui NO, Effect of, on 

 tion. 194 



! . . . .' .:...-.., 



city of water, 180 

 ian waves, 49 

 HopUnsoo on rate of fall of potent 



Leydenjar, 117 

 on specific inductive capacity 

 Hydraulic illustration of magnetic per- 



Hysteresis cycle, Dissipation of 



loop, and energy * < ff l r/Hfr* in cycle, 



MM** :-, 



Mechanical model to illustrate, 279 



'.electric constant of, 131 

 Induced magnetism, 168 

 Induction and intensity in air (mag- 



