Electrostatics

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ISBN: 9781885540041 | 1885540043
Cover: Paperback
Copyright: 12/1/1997

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Supplemental Materials

About the Author	p. 9
Publisher's Foreword	p. 11
Electrostatics Society of America	p. 12
Author's Preface	p. 13
Electrostatics
High Voltage	p. 19
Electrical Hazards	p. 19
Discharges from Small Electrostatic Generators	p. 20
Frictional Electricity	p. 22
The World's First Generator	p. 22
Friction-type Generators	p. 23
The Van de Graaff Generator	p. 24
Frictional Electricity: Troubles and Hazards	p. 25
What Goes On Here?	p. 26
Let's Talk About Charges	p. 28
What This Chapter Will Do for You	p. 28
Atoms, Protons, Electrons, and Ions	p. 29
Some Practice with Big Numbers	p. 30
A Little Aluminum Cube	p. 31
An Enormous Force	p. 31
What Is Charge?	p. 32
The Dirods: Induction-type Generators	p. 34
Induced Charges	p. 34
Collecting the Charges	p. 37
Generator Buildup, and Compound Interest	p. 37
Where Does a Dirod Get Its Initial Charge?	p. 38
How Do the Charges Move Around? The Electron Cloud	p. 39
Conduction and Conductors	p. 40
The Dirod Family	p. 40
Improving the Generator--Learning More about Electrostatics	p. 45
More Rods and Faster Build-up	p. 45
Generator Spark-over: the Spark Shield	p. 48
The Brush Problem	p. 49
What Comes Next?	p. 50
Electric Fields	p. 51
The Field of Two Parallel Rods	p. 51
The Nonuniform Field	p. 52
Potential Difference and Field Intensity	p. 54
Electric Flux	p. 55
More about Forces: the Coulomb Force	p. 55
Alignment with the Field: Field Shape Indicator	p. 57
A Nonuniform Field and the Uniform Field	p. 58
The Sphere Gap and the Rod Gap	p. 59
Induction of Charge, and Field Shape	p. 60
Conductors and Insulators in a Field	p. 61
Faraday's Famous Ice Pail Experiment	p. 62
The Faraday Cage	p. 63
Corona	p. 65
Visible Corona	p. 65
Active and Passive Electrodes: The Breakdown of Air	p. 66
More about Corona in a Dirod	p. 68
Balanced Corona, and an Analogy	p. 70
Generator Voltage Not Fixed by Speed	p. 71
Suppressing Corona	p. 71
The Electric Wind; Other Corona Effects; Precipitation	p. 73
The Electric Fly, or Pinwheel	p. 73
The Electric Blower	p. 74
Demonstration of Smoke Precipitation	p. 77
The Uncertain Soap Bubble	p. 78
The Electric Wind and the Candle Flame	p. 80
Electrostatic Precipitation Put to Use	p. 80
How These Precipitators Work	p. 82
More Demonstrations; Separation of Mixtures	p. 85
The Little Island That Runs Away	p. 85
The Electrified Water Spray	p. 86
The Clapper	p. 87
Franklin's Electrostatic Motor	p. 88
The Dirod as a Motor	p. 91
The Interdigital Motor	p. 91
The Plateful of Balls	p. 92
The Ball Box	p. 93
The Electrostatic Separation Industry	p. 95
Demonstrations with Liquids	p. 96
One Type of Electrostatic Separator	p. 96
Separation without Corona	p. 97
More Service from Corona: Electrocoating	p. 98
Electrostatic Sandpaper	p. 98
Carpets, Upholstery, and Velvet Walls	p. 100
Insecticides	p. 100
Xerox	p. 101
Electrostatic Printing	p. 102
Electrostatic Spray Painting	p. 102
Fun with Capacitors	p. 105
What Is a Capacitor?	p. 105
Amount of Capacitance: the Farad	p. 106
Dielectrics	p. 106
A Kitchen-made Capacitor	p. 108
The Horizontal Capacitor	p. 109
Sphere Gap Discharge of Capacitor	p. 110
Separately Excited Dirod	p. 110
Dirods in Parallel	p. 111
The Roller	p. 111
The Rockers	p. 111
Capacitor Relationships	p. 113
More about Certain Capacitors	p. 115
Unexpected Shocks from Capacitors	p. 116
Connectors; The Vertical Capacitor; Figuring Capacitance	p. 117
Connectors	p. 117
The Vertical Capacitor	p. 118
Other Experiments	p. 119
Figuring Capacitance	p. 120
Capacitors with Dielectrics	p. 120
Combinations of Capacitors	p. 121
More Remarks about Capacitors	p. 122
Atmospheric Electrostatics	p. 123
Charged Clouds, and the Electric Field We Live In	p. 123
Lightning	p. 124
Lightning Rods	p. 125
Ball Lightning	p. 126
Ions Charging Cloud Droplets	p. 127
Charges Induced on Raindrops in Clouds	p. 128
Charged Droplets from Bubbles Breaking	p. 128
Are Tornadoes Powered by Charges?	p. 129
Some More Electrostatic Generators	p. 130
The Kelvin Generator	p. 130
The Flapper	p. 132
The Neon Lamp Bank	p. 133
Shake-sphere Generators	p. 133
The Swing Generator	p. 135
More about the Radial Dirods	p. 136
Dream Up Your Own!	p. 136
On This and That	p. 138
Why Dust Sticks	p. 138
Are Negative Ions Good for Us?	p. 139
Ions in Liquids and Solids	p. 139
The Electret	p. 140
The Electrostatic Speaker	p. 141
The Most Remarkable Capacitors Are Inside of You	p. 141
Some New Electrostatic Developments	p. 143
The Future of Electrostatics	p. 145
Some Final Hints	p. 147
Corona Phenomena in More Detail	p. 147
Sphere Gap Data	p. 148
Field Shape Indicator Details	p. 148
Plans for the Kelvin Generator	p. 149
Materials and Methods	p. 150
More about the Dirod Family	p. 153
Building Dirod Junior	p. 154
Building Radial Dirod Junior	p. 163
The Dirod Manual
Introduction	p. 173
History	p. 173
The Teaching of Electrostatics	p. 174
Feedback	p. 174
Science Fairs	p. 175
Safety	p. 175
How a Dirod Works	p. 177
How a Dirod Charges Up	p. 177
Buildup is Geometric	p. 178
Electrical Discharges: Sparks and Corona	p. 178
Ions	p. 179
Watching Corona	p. 180
Designing for High Voltage	p. 180
Dirod Polarity Reversal	p. 181
Materials, Sources, Methods	p. 182
Brass and Aluminum	p. 182
Brush Material	p. 183
Plexiglas	p. 183
Corona Shields	p. 185
Epoxy Adhesive	p. 185
Corona Dope and TV Tubekoat	p. 186
Nonmetallic Inductors and Collectors	p. 187
Building Your Dirod	p. 188
The Drawings	p. 188
Two Ways to Make a Dirod	p. 188
The Base	p. 188
Bearing Posts	p. 190
Shaft, Bearings, and End Stops	p. 191
The Panel	p. 192
The Rotor	p. 193
Making the Disks	p. 193
Mounting Discs on Shaft	p. 194
Rodding the Rotor	p. 195
The Pulley and Belt	p. 195
The Motor and Speed Control	p. 195
The Brushes	p. 196
The Neutral Connector	p. 196
The Dirod Terminals	p. 196
Lengthening the Machine	p. 197
The Self-excited Dirod	p. 197
Separate Excitation	p. 198
The Capacitor	p. 198
Making the Accessories	p. 200
The Bobber	p. 200
Plugs and Receptacles	p. 200
Connectors: Capacitor Plates to Inductors	p. 200
Operational Flexibility	p. 202
More about Capacitance	p. 202
Two Kinds of Connectors	p. 203
The Rod Gap: Measuring High Voltage	p. 203
The Demonstrations	p. 206
Preliminary Demonstrations Notes	p. 206
Materials	p. 206
Dirod Behavior when Loaded	p. 207
Polarity Indicator	p. 208
Cups that Repel	p. 208
The Ping Pong Pair	p. 209
Water Spray	p. 210
Clatterbox	p. 211
Two-ball Clatterbox	p. 212
Lid Motor	p. 213
Tri-Motor	p. 213
Marble Motor	p. 214
Cup Motor	p. 214
Electric Pinwheel	p. 214
Electric Blower	p. 216
Precipitation	p. 216
The Hailstorm	p. 217
Separating a Mixture	p. 217
Popcorn	p. 218
Franklin Motor	p. 218
Field Indicator	p. 219
Leyden Jars	p. 220
Levitation	p. 221
The Jumper	p. 221
The Rockers	p. 222
The Ball Race	p. 222
"Perpetual Motion"	p. 222
Tassels Terrific	p. 224
Spray Painting	p. 226
A Final Word	p. 228
Electrostatic Hazards	p. 228
Materials List	p. 229
Afterword: A. D. Moore Remembered by his Children	p. 231
Bibliography	p. 235
Index	p. 237
Table of Contents provided by Syndetics. All Rights Reserved.

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