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[[Image:Tempo L8 Fig14.png|thumb|left|480px600px|Cartesian graph of the magnitude and phase of the reflection coefficient vs. frequency with an obliquely incident plane wave source.]]
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[[Image:Tempo L8 Fig15.png|thumb|left|480px600px|Cartesian graph of the magnitude and phase of the transmission coefficient vs. frequency with an obliquely incident plane wave source.]]
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