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

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Page 1

Our present knowledge tells us that electrical phenomena are mainly due to

some particles which are

while the other universal constituent of matter is

charge ...

Our present knowledge tells us that electrical phenomena are mainly due to

some particles which are

**called**electrons — their charge is taken to be negativewhile the other universal constituent of matter is

**called**the proton and it has acharge ...

Page 34

Hence we may write for the field within the dielectric VE = 4np - 4nVP (2) where p

represents the original charge density

charge density - V-P arising due to polarization is

Hence we may write for the field within the dielectric VE = 4np - 4nVP (2) where p

represents the original charge density

**called**the true or free charge and thecharge density - V-P arising due to polarization is

**called**the bound charge.Page 99

t where aa is

material of the conductor at a particular temperature. (It depends also on other

conditions like pressure, presence of the magnetic fields etc.) For isotropic ...

t where aa is

**called**the conductivity tensor and is a characteristic property of thematerial of the conductor at a particular temperature. (It depends also on other

conditions like pressure, presence of the magnetic fields etc.) For isotropic ...

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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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### Common terms and phrases

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