## Classical Electrodynamics |

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Page 296

The power radiated per unit solid angle in the scalar Kirchhoff

9.111) 2 2J1(kaš) 9.112 kaš ( ) 2 2 dP – P," or cos', (e; + COS !) d() 47t 2 cos 0.

where P, is given by (9.104). If we compare the vector Kirchhoff result (9.103) with

...

The power radiated per unit solid angle in the scalar Kirchhoff

**approximation**is (9.111) 2 2J1(kaš) 9.112 kaš ( ) 2 2 dP – P," or cos', (e; + COS !) d() 47t 2 cos 0.

where P, is given by (9.104). If we compare the vector Kirchhoff result (9.103) with

...

Page 297

Then both scalar and vector

dP ^2 P, (ka): d() T The vector and scalar ... There is reason to believe that the

vector Kirchhoff result is close to the correct one, even though the

...

Then both scalar and vector

**approximations**reduce to the common expression,dP ^2 P, (ka): d() T The vector and scalar ... There is reason to believe that the

vector Kirchhoff result is close to the correct one, even though the

**approximation**...

Page 628

... 299 comparison of scalar and vector

Fraunhofer, 292 Kirchhoff

281, 283 vector Kirchhoff

Diffusion ...

... 299 comparison of scalar and vector

**approximations**, 296 Fresnel andFraunhofer, 292 Kirchhoff

**approximation**in, 282 ... 287 use of Green's theorem in,281, 283 vector Kirchhoff

**approximation**, 285 Diffusion of magnetic fields, 313Diffusion ...

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### Contents

Introduction to Electrostatics | 1 |

References and suggested reading | 23 |

Multipoles Electrostatics of Macroscopic Media | 98 |

Copyright | |

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acceleration angle angular applied approximation assumed atomic average axis becomes boundary conditions calculate called Chapter charge charged particle 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 shown in Fig shows side solution space sphere spherical surface transformation unit vanishes vector velocity volume wave written