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Lecture 9 Lecture Notes

Lecture 9 Lecture Notes - outside sphere inside sphere...

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3.3 Conservation of linear momentum & Maxwell Stress Tensor 3.3.1 Derivation and definition of Maxwell Stress Tensor Maxwell Stress Tensor symmetric: define: electromechanic momentum density with surface normal Lec 09 - 21. Jan Thursday, January 22, 2009 9:45 PM Lecture Notes Page 1
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3.3.2 Force laws local representation of conservation law Poynting vector force density momentum density Integrated form: force on area G Force law now expressed exclusively in terms of fields: - external field - internal fields due to charges & currents in volume G represents force per unit area acting on surface force on surface element (vector character!) 3.3.3: Example (Calculation details see Griffith, example 8.2, p. 353) Q: total charge R: radius of sphere uniformly charged sphere Total force acting on upper part of sphere ("northern hemisphere")?
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