Things a Boy Should Know About Electricity Second Edition

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THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY


[Illustration]


       *       *       *       *       *

_BY THE SAME AUTHOR._


  =FUN WITH MAGNETISM.= A book and complete outfit of apparatus
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  =FUN WITH ELECTRICITY.= A book and complete outfit of
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  =HOW TWO BOYS MADE THEIR OWN ELECTRICAL APPARATUS.= A book
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  =THE STUDY OF ELEMENTARY ELECTRICITY AND MAGNETISM BY
     EXPERIMENT.= This book is designed as a text-book for
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  =THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY.= This book
     explains, in simple, straightforward language, many things
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     intensely interested; things he wants to know; things he
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  =ANS., OR ACCURACY, NEATNESS AND SPEED.= For teachers and
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    CATALOGUE UPON APPLICATION

    Thomas M. St. John, 407 West 51st St., New York.

       *       *       *       *       *


THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY

by

THOMAS M. ST. JOHN, Met. E.

Author of "Fun With Magnetism," "Fun With Electricity,"
"How Two Boys Made Their Own Electrical Apparatus,"
"The Study of Elementary Electricity
and Magnetism by Experiment," etc.

SECOND EDITION







[Illustration]

New York
Thomas M. St. John
407 West 51st Street
1903

Copyright, 1900.
By Thomas M. St. John.




THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY




TABLE OF CONTENTS


  CHAPTER                                                   PAGE
      I. About Frictional Electricty                           7
     II. About Magnets and Magnetism                          21
    III. How Electricity is Generated by the Voltaic Cell,    32
     IV. Various Voltaic Cells,                               36
      V. About Push-Buttons, Switches and Binding-Posts,      43
     VI. Units and Apparatus for Electrical Measurements,     48
    VII. Chemical Effects of the Electric Current,            58
   VIII. How Electroplating and Electrotyping are Done,       60
     IX. The Storage Battery, and How it Works,               63
      X. How Electricity is Generated by Heat,                68
     XI. Magnetic Effects of the Electric Current,            71
    XII. How Electricity is Generated by Induction,           77
   XIII. How the Induction Coil Works,                        80
    XIV. The Electric Telegraph, and How it Sends Messages,   84
     XV. The Electric Bell and Some of its Uses,              91
    XVI. The Telephone and How it Transmits Speech,           95
   XVII. How Electricity is Generated by Dynamos,            101
  XVIII. How the Electric Current is Transformed,            109
    XIX. How Electric Currents are Distributed for Use,      114
     XX. How Heat is Produced by the Electric Current,       124
    XXI. How Light is Produced by the Incandescent Lamp,     129
   XXII. How Light is Produced by the Arc Lamp,              135
  XXIII. X-Rays, and How the Bones of the Human Body are
             Photographed,                                   141
   XXIV. The Electric Motor, and How it Does Work,           147
    XXV.