## Classical electrodynamics |

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Page 141

The current density J has only a

(r' ~ a) (5.33) a The delta functions restrict current flow to a ring of radius a. Only a

<f>

The current density J has only a

**component**in the <f> direction, J+ = /<5(cos 6') 6(r' ~ a) (5.33) a The delta functions restrict current flow to a ring of radius a. Only a

<f>

**component**of J means that A will have only a <f>**component**also. But this ...Page 316

If we assume that to be the only

Because the moving fluid will tend to carry the lines of force with it, we expect an

x

If we assume that to be the only

**component**of E, then it must be a constant, E0.Because the moving fluid will tend to carry the lines of force with it, we expect an

x

**component**Bx(z) of magnetic induction, as well as the z**component**B0.Page 476

But we have just seen that for comparable parallel and perpendicular forces the

radiation from the parallel

that from the perpendicular

parallel ...

But we have just seen that for comparable parallel and perpendicular forces the

radiation from the parallel

**component**is negligible (of order 1/y2) compared tothat from the perpendicular

**component**. Consequently we may neglect theparallel ...

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### Contents

Introduction to Electrostatics | 1 |

Scalar potential | 7 |

Greens theorem | 14 |

Copyright | |

17 other sections not shown

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### Common terms and phrases

4-vector acceleration angular distribution approximation assumed atomic average axis behavior Bessel functions boundary conditions bremsstrahlung calculate Chapter charge density charge q charged particle classical coefficients collisions component conductor Consequently consider coordinates cross section current density cylinder defined delta function dielectric constant diffraction dimensions dipole direction discussed effects electric field electromagnetic fields electron electrostatic emitted energy loss expansion expression factor force equation frequency given Green's function impact parameter incident particle inside integral Laplace's equation limit linear Lorentz invariant Lorentz transformation macroscopic magnetic field magnetic induction magnitude Maxwell's equations meson molecules momentum multipole multipole expansion nonrelativistic obtain orbit oscillations parallel perpendicular photon plane wave plasma point charge polarization power radiated problem quantum quantum-mechanical radiative radius region relativistic result scalar scattering shown in Fig shows solid angle solution spectrum spherical surface theorem transverse vanishes vector potential wave equation wave number wavelength written zero