Lecture 31 Lecture Notes

Lecture 31 Lecture Notes - electron gas in metals L31 - 31....

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9. Macroscopic Maxwell Equations 9.1 Microscopic Maxwell Equations charge distribution current distribution due to electrons/protons in matter e and b are exact fields! 9.2 Maxwell Equations in averaged form (Jackson 2nd Ed. 6.7, 3rd Ed. 6.6) Spatial averaging of some function averaging function L: length scale of averaging Note: define now E and B are spatially averaged (macroscopic) fields 9.3 Evaluation of Starting point: decompose molecules free floating, e.g.
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Unformatted text preview: electron gas in metals L31 - 31. Mar March 30 08 9:37 PM Lecture Notes Page 1 sum over individual molecules sum over charges in molecule averaging function Length scale: Taylor Expansion We can pull out the derivatives and put everything together: Lecture Notes Page 2 9.4 Macroscopic Displacement vector macroscopic displacement vector 9.5 Evaluation of with 9.6 Magnetisation H as before Lecture Notes Page 3...
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Lecture 31 Lecture Notes - electron gas in metals L31 - 31....

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