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

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Page 297

Hence the combination of two

direction will be a

direction. Thus x' = a, (x + uxt) ( - 7,x + a^ transformation from A to B x" = cx2 {/ +

UiO t" ...

Hence the combination of two

**Lorentz transformations**with velocities in the samedirection will be a

**Lorentz transformation**with a velocity in the very samedirection. Thus x' = a, (x + uxt) ( - 7,x + a^ transformation from A to B x" = cx2 {/ +

UiO t" ...

Page 299

The resulting transformation is known as

situation in Galilean transformation where x2 + y2 + z2 and / are separately

invariant.

The resulting transformation is known as

**Lorentz transformation**. In**Lorentz****transformation**x2 + y2 + z2 - c2 r2 is an invariant. This may be compared with thesituation in Galilean transformation where x2 + y2 + z2 and / are separately

invariant.

Page 310

The above examples go to show that except in the case of the pure radiation

fields (also sometimes called null fields) the Poynting vector at any point may

always be made to vanish by a

involved ...

The above examples go to show that except in the case of the pure radiation

fields (also sometimes called null fields) the Poynting vector at any point may

always be made to vanish by a

**Lorentz transformation**. However the velocityinvolved ...

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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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