The Study of Elementary Electricity and Magnetism by Experiment / Containing Two Hundred Experiments Performed with Simple, Home-made Apparatus

INDEX.

• Abreast, arrangement of cells, 365.
• Accumulators. (See storage cells.)
• Action, local, 273.
• Air, as insulator, 144, a.
• Alternating currents, 443.
• Amalgamating, 257, 274.
• Amber, 107.
• Ammeter, 353.
• Ampere, the, 351, 357.
• Ampere's rule, 386.
• Annealing, 6.
• Annunciators, 471.
• Anode, 373, 378.
• Applications of electricity, Chap. XXVII.
• Arc lamp, 485.
• Arrangement, of cells, 363 to 368.
• Armature, the, 11, 78, 476.
• Astatic needles, 251, 253, 254;
• galvanoscope, 252, 256.
• Atmospheric electricity, Chap. XIII., 217;
• causes of, 221.
• Attraction, mutual, 111;
• and repulsion, laws of magnetic, 29;
• electric, laws of, 121.
• Aurora borealis, 223.
• Batteries, Chap. XV.;
• storage, 382.
• Bell, electric, 468.
• Bell telephone, 480.
• Bichromate cell, 289.
• Bound electrification, 162, 191.
• Breaking a magnet, 51.
• Bridge, Wheatstone's, 324 to 330.
• Brushes, 476.
• Buzzers, electric, 468.
• Cable, submarine, as condenser, 182.
• Capacity, inductive, 169;
• electrical, 176, 178.
• Carbon, transmitter, 482;
• electroscope, 114.
• Cathode, 373.
• Cell, galvanic, Chap. XV.;
• arrangement of, 363, 364, 365, 368;
• chemical action in, 270, 271;
• direction of current in, 268;
• local action in, 273;
• open and closed circuit, 286;
• polarization of, 278;
• poles of, 269;
• simple, 275;
• secondary, 382;
• single-fluid, 275;
• two-fluid, 281, 285;
• various galvanic, 286 to 291.
• Charge, in condenser, 195;
• residual of condensers, 197.
• Charging conductors, Chap. VIII.
• Chemical action, 369.
• Chemical effects of current, Chap. XXI.
• Circuit, electric, 266;
• divided, 293;
• short, 295.
• Coercive force, 44, 46.
• Coils, 390;
• induction, 473, 474;
• method of joining, 408;
• polarity of, 392;
• resistance, 309;
• simple resistance, 310.
• Commutator, 476.
• Compass, 26;
• our, 32;
• needle, 243, 249.
• Compound magnets, 73.
• Condensation of electrification, Chap. X., 178.
• Condensers, 178;
• action of, 186, 191;
• induction coil, 181;
• submarine cables, 182.
• Conductive discharge, 149, 184.
• Conductors, 126, 129, 133;
• hollow and solid, 153;
• and insulators, relation between, 133;
• and non-conductors, 312.
• Connections, electrical, 226 to 230.
• Contact breaker, Exp. 195;
• § 466.
• Convective discharge, 149.
• Copper sulphate solution, 283.
• Cores, of electromagnets, 397.
• Coulomb, the, 354.
• Current electricity, Part III.
• Current, 144, a, 264;
• detectors, 232, 239;
• direction of in cell, 268;
• direct and alternating, 443;
• extra, 444;
• interrupters, 466;
• primary and secondary, 441;
• measurement of, 352;
• reverser, 235, 237;
• strength of, Chap. XX., 350, 358, 362 to 365;
• unit of, 351.
• Daniell cell, 290.
• Declination, 84.
• Depolarizers, 280, 282.
• Detectors, current, 232, 239.
• Diamagnetic bodies, 15.
• Dielectric, 184, 191, 195.
• Dielectrics, 166.
• Dip, 86.
• Direct currents, 428, 443.
• Dischargers, 188.
• Discharges, kinds of, 149.
• Divided circuits, 293, 323.
• Dry cells, 288.
• Dynamo, 435, 476.
• Earth's magnetism, 83, 92, 93.
• Electric, bells, 468;
• chime, 193;
• circuit, 266, Chap. XVI.;
• current, 144, a, 264;
• density, 155;
• field, 156;
• horse-power, 355;
• lighting, 484;
• machines, static, 216;
• motor, 477;
• polarization, 159;
• resistance, Chap. XVIII.;
• wind, 155.
• Electricity, static, Part II.;
• Current, Part III.;
• Applications of, Chap. XXVII., 456;
• kinds of, 100;
• derivation of name, 107;
• Atmospheric, Chap. XIII., 217.
• Electrification, Chap. VI., 103, 116, 132, 134;
• and heat, 104;
• condensation of, Chap. X.;
• escape of, 155;
• free and bound, 162;
• induced, Chap. IX.;
• kinds of, 120;
• of earth, 222;
• source of in cells, 265;
• theories about, 145;
• two kinds of, 120, 211.
• Electrics and non-electrics, 134.
• Electrified bodies, 102, 107.
• Electrodes, 269.
• Electromagnetism, Chap. XXII., 383.
• Electromagnets, Chap. XXIII., 396;
• cores of, 397;
• horseshoe, 405.
• Electromotive force, 144, Chap. XVII., 296, 300, 303;
• measurement of, Exp. 140;
• of polarization, 373, 382;
• series, 301;
• unit of, 297.
• Electrophorus, 138;
• action of, 171, 172;
• our, 139.
• Electrolysis, 370.
• Electrolyte, 370.
• Electroplating, 376, 378.
• Electroscope, action of, 206, 208;
• carbon, 114;
• pith-ball, 200;
• our leaf, 201, 202.
• Electroscopes, Chap. XI.
• Electrotyping, 379.
• Equator of magnet, 13.
• Equipotential points, 326.
• External resistance, 307, 368.
• Extra current, 444;
• Exp. 199.
• Field, electric, 156;
• magnetic, Chap. IV., 62, 80;
• magnets, 476.
• Figures, magnetic, 64;
• permanent, 417.
• Force, 103;
• lines of magnetic, 64, 73, 80, 156;
• lines of electric, 156;
• lines of about a wire, 385.
• Franklin, Benjamin, 218.
• Free electrification, 162.
• Frictional electricity, Part II.
• Fulminating panes, 180.
• Galvanic cells, Chap. XV., 265;
• chemical action in, 270;
• various kinds of, 286 to 291.
• Galvanoscope, 240 to 249.
• Glass, as insulator, 136.
• Gold-leaf electroscope, 200, 209.
• Gravity cell, 291.
• Hardening steel, 8, 10.
• Heat, effect on resistance, 343;
• effect on magnet, 49.
• Horse-power, electric, 355.
• Horseshoe magnet, 11;
• advantages of, 82;
• electromagnets, 405.
• Hydrogen, 260, 262, 271, 278, 279, 373.
• Inclination of needle, 86.
• Induced currents, Chap. XXV.;
• and work, 429;
• and lines of force, 432, 435, 438;
• direction of, 439.
• Induced magnetism, Chap. III.
• Induction coils, 473;
• action of, 474;
• condensers of, 181;
• with telephone, 483.
• Induction, electromagnetic, 426;
• laws of, 440;
• static, theory of, 159;
• successive, 168.
• Inductive capacity, 169.
• Insulators, Chap. VII., 125.
• Internal resistance, 307, 314, 358, 362, 368.
• Iron and steel, Chap. I.
• Iron, hardening properties of,
• Exp. 4;
• impurities of, 1;
• kinds of, 2;
• soft, 10.
• Jar, Leyden, 179.
• Key, 233, 234.
• Lamp, arc, 485;
• incandescent, 486.
• Laws, of electrification, 121;
• of induction, 440;
• of magnetism, 29;
• of resistance, 349.
• Leclanché cell, 287.
• Leyden jar, 179.
• Lighting, 484, 485, 486.
• Lightning, 144, a; 218;
• rods, 220.
• Lines of force, about a wire, 385, 388;
• electric, 156;
• and induced currents, 432, 438;
• magnetic, 64, 73, 74, 80, 156;
• resistance to, 78, 397.
• Local action, 273.
• Local currents, 273.
• Lodestone, 93.
• Magnetic, bodies, 15;
• circuits, closed, 420;
• field, 62, 80;
• figures, permanent, 417;
• figures, 64, Exp. 161, 162, Exps. 168 to 171;
• force, lines of, 64, 80, 156;
• induction of the earth, 92;
• needle, 26;
• needles, balancing of, 88;
• needle, dip of, 86;
• problems, 33;
• saturation, 42;
• screens, 18;
• tick, Exp. 160;
• transparency, 18.
• Magnetism, Part I.;
• induced, Chap. III., 53;
• residual, 44, 53;
• temporary, 53;
• terrestrial, Chap. V.;
• theory of, 42;
• of earth, 83;
• laws of, 29.
• Magnets, bar, 21;
• compound, 73;
• effect of breaking, 51;
• equator of, 13, 51;
• experimental, 407;
• kinds of, 11;
• natural, 93;
• poles of, 13, 25;
• practical uses of, 16.
• Mercury, 274.
• Motion, production of, Chap. XXVI., 445, 452, 455.
• Motors, electric, 477.
• Mutual attractions, 111.
• Natural magnets, 93.
• Needle, astatic, 251, 253, 254;
• magnetic, 26, 32.
• Negative electrification, 120.
• Neutral bodies, 102.
• Non-conductors, 312.
• Non-electrics, 134.
• North-seeking poles, 25.
• Ohm, the, 308.
• Ohm's law, 356.
• One-fluid theory, 145.
• Open and closed circuits, 266;
• cells, 286.
• Oxygen, 372, 373, 382.
• Peltier effect, 424.
• Pith-ball electroscope, 200.
• Plates or elements, 267.
• Polarization of cells, 278;
• effects of, 279;
• electric, 159, 164;
• electromotive force of, 373;
• magnetic, 56;
• remedies for, 280.
• Poles, 13, 25, 64, 92;
• consequent, 39;
• of coils, 392;
• of electrodes, 269;
• reversal of, 35;
• rule for, 31.
• Pole pieces, 56.
• Positive electrification, 120.
• Potential, 133,144;
• energy, 103.
• Primary current, 441.
• Proof-plane, 209.
• Quantity, unit of, 354.
• Recorder, Exp. 197.
• Relay, telegraph, 462.
• Repulsion, laws of electrostatic, 121;
• laws of magnetic, 29.
• Residual, charge in condenser, 197;
• magnetism, 44;
• magnetism of core, Exp. 159.
• Resistance, coils, 309;
• effect of heat on, 343;
• electrical, Chap. XVIII., 305, 319, 321;
• external and internal, 307, 362, 368;
• internal, 314, 358;
• laws of, 349;
• to lines of force, 78;
• measurement of, Chap. XIX.;
• unit of, 308.
• Retentivity, 44, 46.
• Reverser, current, 235, 237.
• Rheostat, simple, 344.
• Saturation, magnetic, 42.
• Secondary cells, 382;
• current, 441.
• Self-induction, 444.
• Series arrangement of cells, 364.
• Shocks, 188.
• Short circuits, 295.
• Shunts, 293.
• Silk, as insulator, 136.
• Single-fluid cell, 275.
• Single needle telegraph, Exp. 194.
• Sounder, telegraph, 458.
• Spark, 144, a.
• Static electricity, Part II.
• Static electric machines, 216.
• Steel, Chap. I.;
• kinds of, 2;
• magnetism of, 42, 46, 49.
• St. Elmo's fire, 222.
• Storage cells, 382.
• Successive, induction, 168;
• condensation, 199.
• Sulphuric acid, 258, 262, 314.
• Tangent galvanometer, 352.
• Telegraph, line, 459, 460;
• relay, 462;
• single needle instrument, Exp. 194;
• sounder, 458;
• static, 130.
• Telephone, the, 479;
• Bell, 480;
• carbon transmitter, 482;
• with induction coils, 483;
• receiver, 481.
• Tempering steel, 8.
• Temporary magnetism, 53.
• Terrestrial magnetism, Chap. V.
• Thermoelectricity, Chap. XXIV., 423.
• Thermopile, 425;
• home-made, 421.
• Thunder, 219.
• Transformers, 475.
• Transmitters, 480, 482.
• Two-fluid cell, 280, 281;
• care of, 282;
• chemical action in, 285.
• Two-fluid theory of electrification, 146.
• Unit of, current strength, 351;
• E. M. F., 297;
• of power, 355;
• quantity, 354;
• resistance, 308.
• Variation, angle of, 84.
• Varieties of electricity, 100.
• Volt, the, 297.
• Voltameters, 297, 353, 380.
• Water, composition of, 372.
• Watt, the, 355.
• Wheatstone's bridge, 324 to 330.
• Wind, electric, 155.
• Wire tables, Chap. XXVIII.
• Yoke, use of, 406.
• Zero, potential, 144, a.
• Zinc, chemical action with, 271;
• with commercial, 273.
• Zinc plates, reasons for amalgamating, 274.

Notes.

Notes.