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The presence of the divergence in the polarization - charge density seems very natural when one thinks of how this part of the charge density is created . If we consider a small volume in the medium , part of the charge inside that ...
( 6.81 ) Since the volume V is arbitrary , this can be cast into the form of a differential continuity equation or conservation law , au + V.S = -JE at ( 6.82 ) The vector S , representing energy flow , is called Poynting's vector .
The Lorentz force equation can be written as a force per unit volume ( representing the rate of change of mechanical momentum of the sources per unit volume ) : 1 f = pE + J x B ( 11.126 ) where J and p are the current and charge ...
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A soul crushing technical manual written by a sadist that has served as the right of passage for physics PhDs since the dawn of time. Every single one of my professors studied this book, and every ... Read full review
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Introduction to Electrostatics
References and suggested reading
Multipoles Electrostatics of Macroscopic Media
6 other sections not shown