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Electromagnetism

I.S. Grant, W.R. Phillips

(The Manchester physics series)

Wiley, c1990

2nd ed

  • : pbk

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内容説明・目次

巻冊次

ISBN 9780471927112

内容説明

This book is based on lectures on classical electromagnetism given at Manchester University. The level of difficulty is suitable for honours physics students at a British University or physics major at an American University. A-level or high school physics and calculus are assumed, and the reader is expected to have some elementary knowledge of vectors. Unitl one is used to them, vectors are difficult, and the authors have accordingly treated them rather cautiously to begin with. Brief descriptions of the properties of the differential vector operators are given at their first appearance. These descriptions are not intended to be a substitute for a proper mathematical text, but to remind the reader what div, grad and curl are all about, and to set them in the context of electromagnetism. The distinction between macroscopic and microscopic electric and magnetic fields is fully discussed at an early stage in the book.

目次

  • Force and energy in electrostatics
  • di-electrics
  • electrostatic field calculations
  • steady currents and magnetic fields
  • magnetic materials
  • electromagnetic induction and magnetic energy
  • alternating currents and transients
  • linear circuits
  • transmission lines
  • Maxwell's equations
  • electromagnetic waves
  • waveguides
  • the generation of electromagnetic waves
  • electromagnetism and special
  • relativity.
巻冊次

: pbk ISBN 9780471927129

内容説明

The Manchester Physics Series General Editors: D. J. Sandiford; F.Mandl; A. C. Phillips Department of Physics and Astronomy,University of Manchester Properties of Matter B. H. Flowers and E.Mendoza Optics Second Edition F. G. Smith and J. H. ThomsonStatistical Physics Second Edition F. Mandl Electromagnetism SecondEdition I. S. Grant and W. R. Phillips Statistics R. J. BarlowSolid State Physics Second Edition J. R. Hook and H. E. HallQuantum Mechanics F. Mandl Particle Physics Second Edition B. R.Martin and G. Shaw the Physics of Stars Second Edition A. C.Phillips Computing for Scientists R. J. Barlow and A. R. BarnettElectromagnetism, Second Edition is suitable for a first course inelectromagnetism, whilst also covering many topics frequentlyencountered in later courses. The material has been carefullyarranged and allows for flexi-bility in its use for courses ofdifferent length and structure. A knowledge of calculus and anelementary knowledge of vectors is assumed, but the mathematicalproperties of the differential vector operators are described insufficient detail for an introductory course, and their physicalsignificance in the context of electromagnetism is emphasised. Inthis Second Edition the authors give a fuller treatment of circuitanalysis and include a discussion of the dispersion ofelectromagnetic waves. Electromagnetism, Second Edition features: * The application of the laws of electromagnetism to practicalproblems such as the behaviour of antennas, transmission lines andtransformers. * Sets of problems at the end of each chapter to help studentunderstanding, with hints and solutions to the problems given atthe end of the book. * Optional "starred" sections containing more specialised andadvanced material for the more ambitious reader. * An Appendix with a thorough discussion of electromagneticstandards and units. Recommended by many institutions. Electromagnetism. SecondEdition has also been adopted by the Open University as the coursebook for its third level course on electromagnetism.

目次

1 Force and Energy in Electrostatics 1.1 Electric Charge 2 1.2 The Electric Field 6 1.3 Electric Fields in Matter 10 1.3.1 The Atomic Charge Density 10 1.3 2 The Atomic Electric Field 11 1.3.3 The Macroscopic Electric Field 13 1.4 Gauss' Law 16 1.4.1 The Flux of a Vector Field 17 1.4.2 The Flux of the Electric Field out of a Closed Surface 19 1.4.3 The Divergence of a Vector Field 24 1.4.4 The Differential Form of Gauss' Law 26 1.5 Electrostatic Energy 28 1.5.1 The Electrostatic Potential 28 1.5.2 The Electric Field as the Gradient of the Potential 31 1.5.3 The Dipole Potential 35 1.5.4 Energy Changes Associated with the Atomic Field 38 1.5.5 Capacitors, and Energy in Macroscopic Fields 40 1.5.6 Energy Stored by a Number of Charged Conductors 44 Problems 1 46 2 Dielectrics 2.1 Polarization 49 2.2 Relative Permittivity and Electric Susceptibility 55 2.2.1 The Local Field 59 2.2.2 Polar Molecules 60 2.2.3 Non-polar Liquids 67 2.3 Macroscopic Fields in Dielectrics 70 2.3.1 The Volume Density of Polarization Charge 71 2.3.2 The Electric Displacement Vector 73 2.3.3 Boundary Conditions for D and E 76 2.4 Energy in the Presence of Dielectrics 79 2.4.1 Some Further Remarks about Energy and Forces 80 Problems 2 82 3 Electrostatic Field Calculations 3.1 Poisson's Equation and Laplace's Equation 85 3.1.1 The Uniqueness Theorem 88 3.1.2 Electric Fields in the Presence of Free Charge 89 3.2 Boundaries Between Different Regions 91 3.3 Boundary Conditions and Field Patterns 93 3.3.1 Electrostatic Images 93 3.3.2 Spheres and Spherical Cavities in Uniform External Field 97 3.4 Electrostatic Lenses 100 3.5 Numerical Solutions of Poisson's Equation 103 3.6 Summary of Electrostatics 107 Problems 3 109 4 Steady Currents and Magnetic Fields 4.1 Electromotive Force and Conduction 112 4.1.1 Current and Resistance 112 4.1.2 The Calculation of Resistance 116 4.2 The Magnetic Field 119 4.2.1 The Lorentz Force 119 4.2.2 Magnetic Field Lines 123 4.3 The Magnetic Dipole 127 4.3.1 Current Loops in External Fields 127 4.3.2 Magnetic Dipoles and Magnetic Fields 130 4.4 Ampere's Law 132 4.4.1 The Field of a Large Current Loop 132 4.4.2 The Biot-Savart Law 137 4.4.3 Examples of the Calculation of Magnetic Fields 139 4.5 The Differential Form of Ampere's Law 144 4.5.1 The Operator Curl 144 4.5.2 The Vector Curl B 148 4.5.3 The Magnetic Vector Potential 148 4.6 Forces and Torques on Coils 150 4.6.1 Magnetic Flux 151 4.7 The Motion of Charged Particles in Electric and Magnetic Fields 154 4.7.1 The Motion of a Charged Particle in a Uniform Magnetic Field 155 4.7.2 Magnetic Mirrors and Plasmas 157 4.7.3 Magnetic Quadrupole Lenses 159 Problems 4 163 5 Magnetic Materials 5.1 Magnetization 166 5.1.1 Diamagnetism 169 5.1.2 Paramagnetism 173 5.1.3 Ferromagnetism 175 5.2 The Macroscopic Magnetic Field Inside Media 176 5 2.1 The Surface Currents on a Uniformly Magnetized Body 178 5.2.2 The Distributed Currents Within a Magnetized Body 179 5.2.3 Magnetic Susceptibility and Atomic Structure 183 5.3 The Field Vector H 186 5.3.1 Ampere's Law for the Field H 186 5.3.2 The Boundary Conditions on the Field B and H 191 5.4 Magnets 194 5.4.1 Electromagnets 194 5.4.2 Permanent Magnets 204 5.5 Summary of Magnetostatics 208 Problems 5 209 6 Electromagnetic Induction and Magnetic Energy 6.1 Electromagnetic Induction 212 6.1.1 Motional Electromotive Force 214 6.1.2 Faraday's Law 218 6.1.3 Examples of Induction 221 6.1.4 The Differential Form of Faraday's Law 228 6.2 Self-inductance and Mutual Inductance 230 6.2.1 Self-inductance 230 6.2.2 Mutual Inductance 232 6.3 Energy and Forces in Magnetic Fields 234 6.3.1 The Magnetic Energy Stored in an Inductor 234 6.3.2 The Total Magnetic Energy of a System of Currents 235 6.3.3 The Potential Energy of a Coil in a field and the Force on the Coil 237 6.3.4 The Total Magnetic Energy in Terms of the Fields B and H 239 6.3.5 Non-linear Media 241 6.3.6 Further Comments on Energy in Magnetic Fields 243 6.4. The Measurement of Magnetic Fields and Susceptibilities 246 6.4.1 The Measurement of Magnetic fields 246 6.4.2 The Measurement of Magnetic Susceptibilities 248 Problems 6 250 7 Alternating Currents and Transients 7.1 Alternating Current Generators 253 7.2 Amplitude, Phase and Period 256 7.3 Resistance, Capacitance and Inductance in A.C. Circuits 257 7.4 The Phasor Diagram and Complex Impedance 260 7.5 Power in A.C. Circuits 266 7.6 Resonance 268 7.7 Transients 274 Problems 7 280 8 Linear Circuits 8.1 Networks 282 8.1.1 Kirchhoff's Rules 283 8.1.2 Loop Analysis, Node Analysis and Superposition 286 8.1.3 A.C. Networks 288 8.2 Audio-frequency Bridges 291 8.3 Impedance and Admittance 293 8.3.1 Input Impedance 296 8.3.2 Output Impedance and Thevenin's Theorem 297 8.4 Fitters 299 8.4.1 Ladder Networks 301 8.4.2 Higher Order Filters and Delay Lines 303 8.5 Transformers 307 8.5.1 The Ideal Transformer 308 8.5.2 Applications of Transformers 311 8.5.3 Real Transformers 312 Problems 8 318 9 Transmission Lines 9.1 Propagation of Signals in a Lossless Transmission Line 324 9.2 Practical Types of Transmission Line 329 9.2.1 The Parallel Wire Transmission Line 339 9.2.2 The Coaxial Cable 331 9.2.3 Parallel Strip Lines 333 9.3 Reflections 335 9.4 The Input Impedance of a Mismatched Line 338 9.5 Lossy Lines 342 Problems 9 345 10 Maxwell's Equations 10.1 The Equation of Continuity 348 10.2 Displacement Current 350 10.3 Maxwell's Equations 356 10.4 Electromagnetic Radiation 359 10.5 The Microscopic Field Equations 360 Problems 10 362 11 Electromagnetic Waves 11.1 Electromagnetic Waves in Free Space 365 11.2 Plane Waves and Polarization 368 11.2.1 Plane Waves in Free Space 373 11.2.2 Plane Waves in Isotropic Insulating Media 375 11.3 Dispersion 379 11.4 Energy in Electromagnetic Waves 383 11.5 The Absorption of Plane Waves in Conductors and the Skin Effect 388 11.6 The Reflection and Transmission of Electromagnetic Waves 391 11.6.1 Boundary Conditions on Electric and Magnetic Fields 392 11.6.2 Reflection at Dielectric Boundaries 396 11.6.3 Reflection at Metallic Boundaries 399 11.6.4 Polarization by Reflection 401 11.7 Electromagnetic Waves and Photons 404 Problems 11 406 12 Waveguides 12.1 The Propagation of Waves Between Conducting Plates 409 12.2 Rectangular Waveguides 415 12.2.1 The TE01 Mode 420 12.2 2 Further Comments on Waveguides 423 12.3 Cavities 426 Problems 12 430 13 The Generation of Electromagnetic Waves 13.1 The Retarded Potentials 433 13.2 The Hertzian Dipole 436 13.3 Antennas 443 Problems 13 450 14 Electromagnetism and Special Relativity 14.1 Introductory Remarks 451 14.2 The Lorentz Transformation 452 14.3 Charges and Field, as seen by Different Observers 455 14.4 Four-vectors 458 14.5 Maxwell's Equations in Four-vector Form 461 14.6 Transformation of the Fields 464 14.7 Magnetism as a Relativistic Phenomenon 469 14.8 Retarded Potentials from the Relativistic Standpoint 4 73 Problems 14 476 Appendix A Units A.1 Electrical Units and Standards 477 A.1.1 The Definition of the Ampere 477 A.1.2 Calibration and Comparison of Electrical Standards 479 A.2 Gaussian Units 482 A.3 Conversion between SI and Gaussian Units 485 Appendix B Fields and Differential Operators B.1 The Operators div, grad and curl 487 B.2 Formulae in Different Coordinate Systems 489 B.3 Identities 493 Appendix C the Derivation of the Biot-Savart Law Solution to Problems 497 Further Reading 518 Index 519

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詳細情報

  • NII書誌ID(NCID)
    BA1137242X
  • ISBN
    • 9780471927112
    • 9780471927129
  • LCCN
    90035818
  • 出版国コード
    uk
  • タイトル言語コード
    eng
  • 本文言語コード
    eng
  • 出版地
    Chichester [England] ; New York
  • ページ数/冊数
    xvi, 525 p.
  • 大きさ
    23 cm
  • 分類
  • 件名
  • 親書誌ID
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