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

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Page 46

Thus, the measurement of dielectric constant gives very useful information about

molecular characteristics. In equation (24) the molecular

replaced by N p/Af , where N is the Avogadro number, p the density and M the ...

Thus, the measurement of dielectric constant gives very useful information about

molecular characteristics. In equation (24) the molecular

**number density**is oftenreplaced by N p/Af , where N is the Avogadro number, p the density and M the ...

Page 275

If the

electrostatic potential 0 is V20 = -4nne (3) The potential energy of a particle of

charge ±e in the field being ±0e the

...

If the

**number density**of particles of charge e be n , Poisson's equation for theelectrostatic potential 0 is V20 = -4nne (3) The potential energy of a particle of

charge ±e in the field being ±0e the

**number density**of the particles will vary with...

Page 280

... to electronic velocity and kinetic pressure, n0 is the equilibrium

of either type of particles and is therefore the

disturbed state as well. nc is the

state.

... to electronic velocity and kinetic pressure, n0 is the equilibrium

**number density**of either type of particles and is therefore the

**number density**of protons in thedisturbed state as well. nc is the

**number density**of electrons in the disturbedstate.

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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