## Classical Electrodynamics |

### From inside the book

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Page 211

This shows that, apart from an overall phase factor, the pulse travels along

undistorted in shape with a

an energy density is associated with the magnitude of the wave (or its absolute

square) ...

This shows that, apart from an overall phase factor, the pulse travels along

undistorted in shape with a

**velocity**, called the group**velocity**: do * = I. o (7.32) Ifan energy density is associated with the magnitude of the wave (or its absolute

square) ...

Page 340

As the wave number increases towards kp, the phase

large values down towards (u°)”. Consequently for wave numbers of the order of

ko the wave travels with a small enough

As the wave number increases towards kp, the phase

**velocity**decreases fromlarge values down towards (u°)”. Consequently for wave numbers of the order of

ko the wave travels with a small enough

**velocity**that there are appreciable ...Page 494

But a particle moving with constant

radiate if its

Such radiation is called Cherenkov radiation, after its discoverer, P. A. Cherenkov

(1937).

But a particle moving with constant

**velocity**through a material medium canradiate if its

**velocity**is greater than the phase**velocity**of light in the medium.Such radiation is called Cherenkov radiation, after its discoverer, P. A. Cherenkov

(1937).

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### Contents

Introduction to Electrostatics | 1 |

BoundaryValue Problems in Electrostatics I | 26 |

References and suggested reading | 50 |

Copyright | |

16 other sections not shown

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### Common terms and phrases

acceleration angle angular applied approximation assumed atomic average axis becomes boundary conditions calculate called Chapter charge classical collisions compared component conducting Consequently consider constant coordinates cross section cylinder defined density dependence derivative determine dielectric dimensions dipole direction discussed distance distribution effects electric field electromagnetic electron electrostatic energy equal equation example expansion expression factor force frame frequency function given gives incident inside integral involved light limit Lorentz loss magnetic magnetic field magnetic induction magnitude mass means momentum motion moving multipole normal observation obtain origin parallel particle physical plane plasma polarization position potential problem properties radiation radius region relation relative relativistic result satisfy scalar scattering shows side solution space sphere spherical surface transformation unit vanishes vector velocity volume wave written