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Index
HARPER’S ELECTRICITY BOOK FOR BOYS
CONTENTS
INTRODUCTION
Part I
Chapter I SOME GENERAL EXPLANATIONS
Chapter II CELLS AND BATTERIES
Simple Cells
A Plunge-battery
A Storage-battery
Dry-cells and Batteries
Chapter III PUSH-BUTTONS AND SWITCHES
Push-buttons
Switches and Cut-outs
Table-jack Switches
Binding-posts and Connectors
Lightning-arresters and Fuse-blocks
Chapter IV MAGNETS AND INDUCTION-COILS
Simple and Horseshoe Magnets
Induction-coils
An Electric Buzzer
A Large Induction-coil
Circuit-Interrupters
Chapter V ANNUNCIATORS AND BELLS
A Drum Sounder
An Annunciator
A Double Electric Bell
An Electric Horn
Burglar-alarms
Signals and Alarms
A Dining-table Call
Chapter VI CURRENT-DETECTORS AND GALVANOMETERS
An Astatic Current-detector
An Astatic Galvanometer
A Tangent Galvanometer
Part II
Chapter VII ELECTRICAL RESISTANCE
Ohm’s Law
Resistance-coils and Rheostats
Liquid Resistance
Chapter VIII THE TELEPHONE
A Bladder Telephone
A Single (Receiver) Line
Plan of Installation
A Double-pole Receiver
The Transmitter
Another Form of Transmitter
The Wiring System
A Telephone Induction-coil
An Installation Plan
A Portable Apparatus
Chapter IX LINE AND WIRELESS TELEGRAPHS
A Ground Telegraph
Wireless Telegraphy
Chapter X DYNAMOS AND MOTORS
The Uni-direction Dynamo
A Small Dynamo
A Split-ring Dynamo
A Small Motor
The Flat-bed Motor
Another Simple Motor
A Third Type of Motor
Chapter XI GALVANISM AND ELECTRO-PLATING
Simple Electro-plating
The Cleansing Process
The Plating-bath
Silver-plating
Gold-plating
Nickel-plating
Finishing
Electrotyping
Chapter XII MISCELLANEOUS APPARATUS
A Rotary Glass-cutter
To Smooth Glass Edges
To Cut Holes in Glass
Anti-hum Device for Metallic Lines
A Reel-car for Wire
Insulators
Joints and Splices
“Grounds”
The Edison Roach-killer
An Electric Mouse-killer
Chapter XIII FRICTIONAL ELECTRICITY
A Wimshurst Influence Machine
A Large Leyden-jar
A Glass-legged Stool
Chapter XIV FORMULÆ
Acid-proof Cements
Hard Cement
Soft Cement
Very Hard Cement
Clark’s Compound
Battery Fluid
Glass Rubbing
Acetic Glue
Insulators
Non-conductors
Insulating Varnish
Battery Wax
Chapter XV ELECTRIC LIGHT, HEAT, AND POWER
The Work of the Dynamo
The Electric Light
Uses of the Arc-Light
Incandescent and Other Lamps
Electric Heat
Electric Furnaces
Welding Metals
Electric Car-heaters
Household Uses
Electric Power
Power from Water-wheels
Transformers
Rotary Converters
Oil-switches
Electric Traction
The Trolley-car
The Continuous-current Motor
The Controller
Electric Locomotives
Other Forms of Electric Traction
APPENDIX A DICTIONARY OF ELECTRICAL TERMS AND PHRASES
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Transcriber’s Notes
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