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INDEX

Electromotive Force, 75, 82, 94.

Electrophorus, 29.

Electroscope, double pith ball, 26;
gold-leaf, 26; paper, 24; pith-ball, 24.

Electro-plating, 366.

Elektron, 16.

Element, cell, 59, 66, 67, 68.

Ether, 238; waves in, 239, 241.

Experiments, with an electric ma-
chine, 48; with spark coils, 209.

F

Faraday, Michael, 89.

Field of Force, 85.

Field, castings, 31o; dynamo, 309; lami-
nations, 299; motor, 293, 295, 299.

Figures, Lichtenberg’s, 52.

Fixed Condenser, 262.

Floor, for electric car, 320.

Fluorosc0pe, 217.

Force, field of, 85; magnetic, 11.’

Forming Plates, 80. .

Frame for Wimshurst Machine, 43.

Franklin, Benjamin, 17; kite experi-
ment, 17, 18, 19, 20.

Frequency, 99.

Frog Pond, electric, 3o.

Fuses, 110, 111.

G

Galena, 242, 260.

Galvanometer, astatic, 132.

Galvanometer, 126. .

Galvanosc0pe, simple, 127; compass,
127; astatic, 129.

Galvanosc0pes, 126.

Gaps, spark, 267; coils, 266.

Geissler Tubes, 211.

Generator, complete, 308.

Ghost Light, 212.

Gnomon, 2.

Gravity Cells, 81.

Grid, storage cell, 76.

Ground, for wireless, 247; clamp, 247.

Gunpowder, igniting, 49.

H

Hanging Lamp, 344.
Head, fiber, 230.

 

.39I

Heat, generated into electricity, 354.

Helix, 270; clip, 270; how to connect,
271.

Hertzian Waves, 241.

High-frequency, coil, 375; currents,

37S-
Horse-power, electrical, 96.
Hydrogen, 56.

I

Igniting Gunpowder, 49.

Induction, 19; electro-magnetic, 89;
magnetic, 8, 82, 90.

Induction Motor, 364.

Instruments, wireless, 243.

Insulating Pin, 105.

Insulator, glass, 105.

Insulators, 104.

Interrupter, for medical coil,
spark coil, 206.

Iron Pyrites, 242.

I96;

I

Jacob’s Ladder, 215.
Jar, Leyden, 48.
Joke, practical, 213.

K

Keeper, magnet, 15.
Key, strap, 284.
Kilowatt, 96.
Kilowatt hour, 97.
Knife Contact, 135.
Knobs, porcelain, 105.

L

Ladder, Jacob’s, 215.

Lamp, Bracket, for miniature lighting,
342; home-made, 343.

Lamp, carbon battery, 335; tungsten
battery, 336.

Lamp Bank, 364.

Lamp, .for telling time at night, 350;
hanging, 344; ruby. 347.

Lantern, electnc, 346, 347.

Lead-in, 247.

Leading-stone, 3.

Léclanche cell, 59.

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