Lecture 13 Lecture Notes

Lecture 13 Lecture Notes - Lec 13 - 04. Feb February0309...

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5.5 Complex notation for real fields 5.5.1 Definitions are real fields over => use free parameters to enforce real valued solutions => can still start from complex solutions of differential equations or => use complex solutions and set e.g. Example: Note: for any linear combination of complex counterparts calculations are easy: Attention for non-linear combinations! 5.5.2 Time averages (see Reitz et al, section 17-3, p. 422) Real and Complex part each satisfy Maxwell's equations independently Similarly, this applies also to the vector and scalar potential! Lec 13 - 04. Feb February 03 09 9:54 PM Lecture Notes Page 1
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Then Time average over interval T, with Example: Optical frequencies: => in actual experiments on time averages are being observed no detection process can revolve these rapid oscillations Further Example: Example (time average): radiation pressure (by absorption) (volume) transferred in time t I: intensity surface normal Lecture Notes Page 2
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Sunlight: important factor for satellites! 5.6 Solution via spectral decomposition
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Lecture 13 Lecture Notes - Lec 13 - 04. Feb February0309...

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