## Classical theory of electricity and magnetism: a course of lectures |

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Page 132

Formula (25) provides a method for the determination of the

opaque materials — alternatively formula (25) may be subject to observational ...

coefficient be measured and the

Formula (25) provides a method for the determination of the

**refractive index**ofopaque materials — alternatively formula (25) may be subject to observational ...

coefficient be measured and the

**refractive index**obtained from dispersion theory.Page 226

polarizability depends on the frequency of the incident electric field — in

particular if the frequency be high enough, the molecules cannot respond to the

electric field ...

**refractive index**n is independent of the frequency. In reality the molecularpolarizability depends on the frequency of the incident electric field — in

particular if the frequency be high enough, the molecules cannot respond to the

electric field ...

Page 233

(27) (28) toM The plane wave equation is now of the form (P(/-We/c) - tikpxic ipU-

ivtc) e e - nkpxtc So that n gives the

the wave. The figure shows the variation of n with p as given by (27). We see ...

(27) (28) toM The plane wave equation is now of the form (P(/-We/c) - tikpxic ipU-

ivtc) e e - nkpxtc So that n gives the

**refractive index**and e shows an absorption ofthe wave. The figure shows the variation of n with p as given by (27). We see ...

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### Contents

The empirical basis of electrostatics | 1 |

Direct calculation of fields | 7 |

dipoles9 The Dirac 5function13 | 13 |

Copyright | |

23 other sections not shown

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acceleration angle angular axis boundary conditions calculate called centre charge density charge distribution charged particle coefficient coil components conducting conductor consider coordinates dielectric constant differential dipole direction distance divergence electric and magnetic electric field electromagnetic field electromotive force electron electrostatic energy flux equation 16 expression field due field point finite fluid formula Fourier frame frequency function given gives Hence incident infinite interaction isotropic Laplace's equation linear Lorentz transformation magnetic field magnitude Maxwell's equations medium molecule momentum motion number density obtain orthogonal oscillations permanent magnets perpendicular photon plane plasma point charge polarization potential due Poynting vector radiation field radiation reaction radius refractive index region relation result satisfied scalar shows sin2 solution special theory sphere at infinity spherical surface integral symmetry tensor term theorem theory of relativity transverse uniform vanishes vector potential velocity volume wave length write zero