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Things a Boy Should Know About Electricity: Second EditionSt. John, Thomas M. (Thomas Matthew)

Science

Things a Boy Should Know About Electricity: Second Edition

Name: Things a Boy Should Know About Electricity: Second Edition
Author: St. John, Thomas M. (Thomas Matthew)

St. John, Thomas M. (Thomas Matthew)

Electricity

Air pressure, effect of spark upon, 155.

    Aluminum-leaf, for electroscopes, 5.

    Alternating current, 129, 130;
      system of wiring for, 144.

    Amalgamation of zincs, 47.

    Amber, electrification upon, 3.

    Ammeter, the, 74;
      how placed in circuit, 77.

    Ampere, the, 72.

    Annunciators, 177.

    Anode, 79, 82.

    Apparatus for electrical measurements, Chap. VI.

    Appliances, for distribution of currents, 141;
      for electric railways, 167;
      for heating by electricity, 147.

    Arc, the electric, 152.

    Arc lamp, the, 153;
      how light is produced by, Chap. XXII.;
      double carbon, 153;
      hand-feed focussing, 153;
      for search-lights, 153;
      short, for basements, 153;
      single carbon, 153;
      for theater use, 153.

    Armature, of dynamo, 127, 129;
      of electromagnets, 98;
      of horseshoe magnet, 26;
      of motors, 161;
      uses of, 39.

    Artificial magnets, 25.

    Astatic, detectors, 94;
      galvanometer, 73;
      needles, 94.

    Aurora borealis, 23.

    Automatic, current interrupters, 104, 115;
      gas lighters, 174;
      program clocks, 172.

    Automobiles, 169;
      controllers for, 169;
      motors for, 169;
      steering of, 169;
      storage batteries for, 169.


    Bamboo filaments, 149.

    Bar magnets, 27;
      magnetic figures of, 38.

    Batteries, large plunge, 54;
      plunge, 53;
      secondary, 86;
      storage, and how they work, Chap. IX.

    Bell, the electric, and some of its uses, Chap. XV.;
      electric, 116;
      magneto testing, 117;
      trembling, etc., 116.

    Bell transmitter, 120.

    Belts, electricity generated by friction upon, 1.

    Benjamin Franklin, 18.

    Bichromate of potash cells, 51, etc.

    Binding-posts, Chap. V.;
      common forms of, 63.

    Blasting, by electricity, 147;
      electric machines for, 147.

    Bluestone cell, 56.

    Boats, electric, 168.

    Boilers, use of in central stations, 170.

    Bones, photographed by x-rays, Chap. XXIII.

    Boosters, 136.

    Brushes, 129.

    Bunsen cells, 56_a_.

    Burner, automatic, 174;
      for gas-lights, 174;
      ratchet, 174.

    Buzzers, electric, 118.


    Cables and wires, 143.

    Call boxes, electric, 173.

    Carbon, in arc lamps, 152, 153;
      filament, 149;
      transmitter, 123.

    Carpet, electricity generated upon, 1.

    Cars, electric, 164;
      controllers for, 165;
      heating by electricity, 167;
      overhead system for, 166;
      underground system for, 166.

    Cat, electricity generated upon, 1.

    Cathode, definition of, 79;
      rays, 157.

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Things a Boy Should Know About Electricity: Second Edition

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