Rising Force : The Magic of Magnetic Levitation

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  • Format: Hardcover
  • Copyright: 2011-05-30
  • Publisher: Harvard Univ Pr
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From Peter Pan to Harry Potter, from David Copperfield to levitating toys, there is magic in conquering gravity. In this first-ever popular introduction to "maglev"- the use of magnetic forces to overcome gravity and friction-James D. Livingston takes lay readers on a journey of discovery, from basic concepts to todayrs"s most thrilling applications.The tour begins with examples of our historical fascination with levitation, both real and fake. At the next stop, Livingston introduces readers to the components of maglev: gravitational and magnetic forces in the universe, force fields, diamagnetism and stabilization, superdiamagnetism and supercurrents, maglev nanotechnology, and more. He explores the development of the superconductors that are making large-scale levitation devices possible, and the use of magnetic bearings in products ranging from implanted blood pumps to wind turbines, integrated circuit fabrication, and centrifuges to enrich uranium. In the last chapters, we arrive at the science behind maglev transportation systems, such as Chinese trains that travel 250 miles per hour without touching the tracks. Packed with fascinating anecdotes about the colorful personalities who have "fought friction by fighting gravity," the book maintains accuracy throughout while it entertains and informs technical and nontechnical readers alike. With so many new applications for magnetic levitation on the horizon, Rising Force is sure to retain its own magic for years to come.

Table of Contents

Prefacep. ix
Levity vs. Gravityp. 1
Fictional and Illusional Levitationp. 1
Wingardium Leviosa!p. 9
Mystical Levitationp. 10
Physical Levitation without Magnetsp. 13
Gravitational and Magnetic Forcesp. 19
Forces of the Universep. 19
Magnetic Forcesp. 23
Magnetic Materialsp. 29
Maglev-A Balance of Forcesp. 33
Poles Apartp. 33
Force at a Distancep. 36
The Floating Island of Laputap. 38
Stability and Degrees of Freedomp. 42
Spinning the Levitronp. 48
Only a Toyp. 48
Toy Storyp. 50
The Superp. 56
Inducing Upliftp. 64
Mutual Inductionp. 64
Flinging Rings and Thingsp. 72
Eddy-Current Heating and Levitation Meltingp. 78
Fields of Forcep. 80
Flying Frogsp. 83
The Ig Nobel Prizep. 83
Diamagnetism and the Moses Effectp. 85
Diamagnetic Levitation and Stabilizationp. 89
Froglevp. 95
Super-Levitationp. 101
Superdiamagnetism and Supercurrentsp. 101
Higher Fieldsp. 107
Higher Temperaturesp. 111
Feeding Backp. 120
Brief Recapp. 120
Floating Globesp. 121
Floatin' in the Windp. 131
Snowball in Hellp. 135
Microbots and Pigsp. 139
In a Spinp. 143
Bearing Upp. 143
Enriching and Proliferatingp. 146
A Few Words about Energyp. 151
Flying Wheelsp. 154
Pumping Bloodp. 158
Floating Rotorsp. 162
The No-Spin Zonep. 167
Flying Broomsticksp. 167
Flotors and the Maglev Touchp. 169
Maglev Nanotechnologyp. 174
Sub-Nano: Angstroms and Atomsp. 180
Maglev Rocket Sledsp. 183
Flying Trainsp. 188
Emile Bacheletp. 188
Kemper and Electromagnetic Levitation (EML)p. 194
Powell/Danby and Electrodynamic Levitation (EDL)p. 200
The Competitionp. 204
All Aboard!p. 210
Urban Maglevp. 210
Permanent-Magnet Maglevp. 214
Transrapid Trials-and Tribulationsp. 217
Sin Express to Vegasp. 224
Maglev Deployment Program and ARRAp. 227
Keeping It Upp. 231
Up with Magnets!p. 231
Magnetic Personalitiesp. 237
Ben Franklin's Vision: Levity over Gravityp. 240
Sources and Suggested Readingsp. 249
Acknowledgmentsp. 259
Indexp. 263
Table of Contents provided by Ingram. All Rights Reserved.

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