348 



INDEX. 



Franklin, E. C., Application of Dissocia- 

 tion Theory, 12 



Franklin, W. S. , Elements of Electrical 

 Engineering, 8 1 



Frequency, definition of, 127 



Galvanic cell, see voltaic cell 

 Galvanometer shunts, 49 

 the ballistic, 161 

 the D'Arsonval, 113 

 the Kelvin, 112 

 the tangent, 104 



Gaussin's error of the compass, 310 

 Gauss's method for measuring the hori- 

 zontal component of the earth's mag- 

 netic field, 74, 287 

 Geissler tube, the, 226 

 Generator, the electric, 1 24 

 Gibbs, H. D., Application of Dissocia- 

 tion ITieory, 12 

 Glow lamp, the, 339 

 Gold leaf electroscope, 209 

 Gravity cell, the, 14 

 Gray, Andrew, Absolute Measurements, 



144 

 Treatise on Magnetism and 



Electricity, 292 



Grenet cell, see chromic-acid cell 

 Growth of current in an inductive circuit, 

 146 



Hadley, H. E., Magnetism and Elec- 

 tricity for Students, 316 

 Hall effect, the, 318 

 Heating effect of electric current, 4, 25 

 Heaviside, Electromagnetic Theory, 271 

 Heeling corrector of compass, 310 



error of compass, 309 

 Helmholtz's Theory of Monocyclic Sys- 

 tems, 117 



Henry, definition of the, 143 

 Hertz, On Electric Waves, 264 

 Hydraulic analogue of electromotive force, 



36 

 of the electric current, 4 



Inclination, magnetic, 293 



Induced electromotive force, 117 



law of, 121, 123 

 Inductance, 141 



definition of, 142 



measurement of, 144 



mechanical analogue of, 144 



mutual, definition of, 156 



of a long solenoid, 154 



units of, 143 

 Induction coil, the, 131 

 Inductive circuit, growth and decay of 



current in, 146, 149 

 Inductivity of a dielectric, 168 

 Inducti vities, table of, 169 

 Inductometer, the bismuth, 290 

 Insulation resistance, measurement of, 



282 



Insulators of electricity, I 

 Intensity of electric field, 172 



of magnetic field, 66 



of magnetization, 84 

 International standards, history of, by F. 



A. Wolff, 276 

 Ions in gases, 222 

 lonization of a gas, 223 

 Iron, magnetization of, 8 1 



Jones's Theory of Electrolytic Dissocia- 

 tion, 5 

 Joule's Law, 25 



application of, to a portion of a 

 circuit, 38 



Kelvin galvanometer, the, 1 12 

 Kerr effect, the, 318 

 Key, the telegraph, 324 



Lamination, 136 



Lamp, the electric, 338 



Larmor, Joseph, jQLther and Matter, 242 



Leblanc's Electrochemistry, 5 



Lenz's Law, 117 



examples of, 1 20, 136 

 Lighting, electric, 337 

 Lightning arrester, the, 152 



protection, 322 

 Line of force, definition of, 65, 70 



