Electricity for Boys

Electricity for Boys, by J. S.
Zerbe

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Title: Electricity for Boys
Author: J. S. Zerbe
Release Date: September 25, 2007 [EBook #22766]
Language: English
Character set encoding: ISO-8859-1
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ELECTRICITY FOR BOYS ***

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THE "HOW-TO-DO-IT" BOOKS
ELECTRICITY FOR BOYS

[Illustration: Fig. 1. WORK BENCH]

THE "HOW-TO-DO-IT" BOOKS
ELECTRICITY FOR BOYS
A working guide, in the successive steps of electricity, described in
simple terms
WITH MANY ORIGINAL ILLUSTRATIONS
By J. S. ZERBE, M.E.
AUTHOR OF CARPENTRY FOR BOYS PRACTICAL
MECHANICS FOR BOYS
[Illustration: Printer's Mark]
THE NEW YORK BOOK COMPANY NEW YORK

COPYRIGHT, 1914, BY THE NEW YORK BOOK COMPANY

CONTENTS
INTRODUCTORY Page 1
I. ELECTRICITY CONSIDERED. BRIEF HISTORICAL EVENTS
Page 5
The Study of Electricity. First Historical Accounts. Bottling Electricity.
Discovery of Galvanic Electricity. Electro-motive Force. Measuring
Instruments. Rapidity of Modern Progress. How to Acquire the Vast
Knowledge. The Means Employed.
II. WHAT TOOLS AND APPARATUS ARE NEEDED Page 11

Preparing the Workshop. Uses of Our Workshop. What to Build. What
to Learn. Uses of the Electrical Devices. Tools. Magnet-winding Reel.
III. MAGNETS, COILS, ARMATURES, ETC. Page 18
The Two Kinds of Magnets. Permanent Magnets. Electro-Magnets.
Magnetism. Materials for Magnets. Non-magnetic Material. Action of a
Second Magnet. What North and South Pole Mean. Repulsion and
Attraction. Positives and Negatives. Magnetic Lines of Force. The
Earth as a Magnet. Why the Compass Points North and South.
Peculiarity of a Magnet. Action of the Electro-Magnet. Exterior
Magnetic Influence Around a Wires Carrying a Current. Parallel Wires.
IV. FRICTIONAL, VOLTAIC OR GALVANIC AND
ELECTRO-MAGNETIC ELECTRICITY Page 29
Three Electrical Sources. Frictional Electricity. Leyden Jar. Voltaic or
Galvanic Electricity. Voltaic Pile; How Made. Plus and Minus Signs.
The Common Primary Cell. Battery Resistance. Electrolyte and Current.
Electro-magnetic Electricity. Magnetic Radiation. Different Kinds of
Dynamos. Direct Current Dynamos. Simple Magnet Construction. How
to Wind. The Dynamo Fields. The Armature. Armature Windings.
Mounting the Armature. The Commutator. Commutator Brushes.
Dynamo Windings. The Field. Series-wound Field. Shunt-wound.
Compound-wound.
V. HOW TO DETECT AND MEASURE ELECTRICITY Page 49
Measuring Instruments. The Detector. Direction of Current. Simple
Current Detector. How to Place the Detector. Different Ways to
Measure a Current. The Sulphuric Acid Voltameter. The Copper
Voltameter. The Galvanoscope Electro-magnetic Method. The
Calorimeter. The Light Method. The Preferred Method. How to Make a
Sulphuric Acid Voltameter. How to Make a Copper Voltameter.
Objections to the Calorimeter.
VI. VOLTS, AMPERES, OHMS AND WATTS Page 60

Understanding Terms. Intensity and Quantity. Voltage. Amperage
Meaning of Watts and Kilowatt. A Standard of Measurement. The
Ampere Standard. The Voltage Standard. The Ohm. Calculating the
Voltage.
VII. PUSH BUTTONS, SWITCHES, ANNUNCIATORS, BELLS
AND LIKE APPARATUS Page 65
Simple Switches. A Two-Pole Switch. Double-Pole Switch. Sliding
Switch. Reversing Switch. Push Buttons. Electric Bells. How Made.
How Operated. Annunciators. Burglar Alarm. Wire Circuiting.
Circuiting System with Two Bells and Push Buttons. The Push Buttons,
Annunciators and Bells. Wiring Up a House.
VIII. ACCUMULATORS, STORAGE OR SECONDARY
BATTERIES Page 82
Storing Up Electricity. The Accumulator. Accumulator Plates. The
Grid. The Negative Pole. Connecting Up the Plates. Charging the Cells.
The Initial Charge. The Charging Current.
IX. THE TELEGRAPH Page 90
Mechanism in Telegraph Circuit. The Sending Key. The Sounder.
Connecting Up the Key and Sounder. Two Stations in Circuit. The
Double Click. Illustrating the Dot and the Dash. The Morse Telegraph
Code. Example in Use.
X. HIGH-TENSION APPARATUS, CONDENSERS, ETC. Page 98
Induction. Low and High Tension. Elastic Property of Electricity. The
Condenser. Connecting up a Condenser. The Interrupter. Uses of
High-tension Coils.
XI. WIRELESS TELEGRAPHY Page 104
Telegraphing Without Wires. Surging Character of High-tension
Currents. The Coherer. How Made. The Decoherer. The Sending

Apparatus. The Receiving Apparatus. How the Circuits are Formed.
XII. THE TELEPHONE Page 110
Vibrations. The Acoustic Telephone. Sound Waves. Hearing Electricity.
The Diaphragm in a Magnetic Field. A Simple Telephone Circuit. How
to Make a Telephone. Telephone Connections. Complete Installation.
The Microphone. Light Contact Points. How to Make a Microphone.
Microphone, the Father of the Transmitter. Automatic Cut-outs for
Telephones. Complete Circuiting with Transmitters.
XIII. ELECTROLYSIS, WATER PURIFICATION,
ELECTROPLATING Page 123
Decomposing Liquids. Making Hydrogen and Oxygen. Purifying
Water. Rust. Oxygen as a Purifier. Composition of Water. Common Air
Not a Good Purifier. Pure Oxygen a Water Purifier. The Use of
Hydrogen in Purification. Aluminum Electrodes. Electric Hand Purifier.
Purification and Separation of Metals. Electroplating. Plating Iron with
Copper. Direction of Current.
XIV. ELECTRIC HEATING. THERMO-ELECTRICITY