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��I N D E X.

��Condenser, capacity of, 50, 87, 102, 196,

227-229, 771, 774-780. Conduction, 29, 241-254. Conduction, linear, 273-284.

superficial, 294.

in solids, 285-334.

electrolytic, 255-265.

in dielectrics, 325-334. Conductivity, equations of, 298, 609.

and opacity, 798. Conductor, 29, 80, 86.

Conductors, systems of electrified, 84-94. Confocal quadric surfaces, 147-154, 192. Conjugate circuits, 538, 759.

conductors, 282, 347.

functions, 182-206.

harmonics, 138.

Constants, principal, of a coil, 700, 753,

754.

Conservation of energy, 92, 242, 262, 543, Contact force, 246. Continuity in time and space, 7-

equation of, 36, 295. Convection, 55, 238, 248. Convergence, 25. Copper, 51, 360, 362, 761. Cotes, Roger, 865.

Coulomb, C. A., 38, 74, 215, 223, 373. Coulomb s law, 79, 80. Crystal, conduction in, 297.

magnetic properties of, 435, 436, 438.

propagation of light in a, 794-797. Gumming, James, 252.

Curl, 25.

Current, electric, 230.

best method of applying, 744.

294, 647-681.

��induced, 582.

steady, 232.

thermoelectric, 249-254.

transient, 232, 530, 536, 537, 582, 748, 758, 760, 771, 776.

Current- weigher, 726. Cyclic region, 18, 113, 481. Cylinder, electrification of, 189.

magnetization of, 436, 438, 439.

currents in, 682-690. Cylindric coils, 676-681.

��Damped vibrations, 732-742, 762. Damper, 730. Daniell s cell, -232, 272. Dead beat galvanometer, 741. Decrement, logarithmic, 736. Deflexion, 453, 743. Delambre, J. B. J., 3. Dellmann, F., 221. Density, electric, 64.

of a current, 285.

measurement of, 223. Diamagnetism, 429, 440, 838. Dielectric, 52, 109, 111, 229, 325-334,

366-370, 784.

��Diffusion of magnetic force, 801.

Dip, 461.

Dipolar, 173, 381.

Dimensions, 2, 42, 87, 278, 620-629.

Directed quantities (or vectors), 10.

Directrix, 517.

Discharge, 55.

Discontinuity, 8.

Disk, 177.

Arago s, 668, 669.

Displacement, electric, 60, 75, 76, 111,

328-334, 608, 783, 791. Dygogram, 441.

��Earnshaw, S., 116.

Earth, magnetism of, 465-474.

Electric brush, 56.

charge, 31.

conduction, 29.

convection, 211, 238, 248, 255, 259.

current, 230.

discharge, 55-57.

displacement, 60, 75, 76, 111, 328- 324, 608, 783, 791.

energy, 85.
 * glow, 55.

induction, 28.

machine, 207.

potential, 70.

spark, 57.

tension, 48, 59, 107, 108, 111.

wind, 55. Electrode, 237.

Electro dynamic system of measurement, ^526.

Electrodynamometer, 725. Electrolysis, 236, 255-272. Electrolyte, 237, 255. Electrolytic conduction, 255-272, 363, 799.

polarization, 257, 264-272. Electromagnetic force, 475, 580, 583.

measurement, 495.

momentum, 585.

observations, 730-780.

and electrostatic units compared, 768- 780.

rotation, 491, Electromagnetism, dynamical theory of,

568-577.

Electrometers, 214-220. Electromotive force, 49, 69, 111, 241,

246-254, 358, 569, 579. Electrophorus, 208. Electroscope, 33, 214. Electrostatic measurements, 214-229.

polarization, 59, 111.

attraction, 103-111.

system of units, 620, &c. Electrotonic state, 540. Elongation, 734. Ellipsoid, 150, 302, 437, 439. Elliptic integrals, 149, 437, 701. Energy, 6, 85, 630-633, 782, 792.

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