## Classical Electrodynamics |

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Page 447

We will content ourselves with the extreme relativistic

Consequently we can approximate the Bessel functions by their small argument

We will content ourselves with the extreme relativistic

**limit**(3 - 1). Furthermore ...Consequently we can approximate the Bessel functions by their small argument

**limits**(3.103). Then in the relativistic**limit**the Fermi expression (13.70) is (#).Page 493

angles such that 2ka sin:- (14.112) If the frequency is low enough so that ka o 1,

then the

there will be a region of forward angles less than 1 0. - – 14.113 ka ( ) where the

angles such that 2ka sin:- (14.112) If the frequency is low enough so that ka o 1,

then the

**limit**qa o 1 will apply at all angles. But for frequencies where ka » 1,there will be a region of forward angles less than 1 0. - – 14.113 ka ( ) where the

**limit**...Page 518

15.5 Radiation cross section So in the complete screening

value is the semiclassical result. The curve marked “Bethe-Heitler” is the

quantumO 09max - - - mechanical Born approximation. Guy —For extremely

relativistic ...

15.5 Radiation cross section So in the complete screening

**limit**. The constantvalue is the semiclassical result. The curve marked “Bethe-Heitler” is the

quantumO 09max - - - mechanical Born approximation. Guy —For extremely

relativistic ...

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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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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