Plane Wave Reflection from a Media Interface (Good Conductor)

Thread starter baby_1
Start date May 13, 2025
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Maxwell's equation

AI Thread Summary

The discussion focuses on the expressions for electric (E) and magnetic (H) fields in a good conductor and how to derive the Poynting vector from these equations. A discrepancy is noted between the derived results and those presented in a referenced textbook, particularly concerning the definition of the relationship between the two intrinsic impedances. Participants analyze the implications of this difference on the understanding of plane wave reflection at a media interface. The conversation emphasizes the importance of accurate definitions in electromagnetic theory. Clarification of these concepts is essential for resolving the inconsistencies observed.

May 13, 2025

baby_1

Homework Statement: Obtaning the Poynting vector for the conductor

Relevant Equations: Maxwell Equation

Hi,
Below are the expressions for the electric (E) and magnetic (H) fields in a good conductor.

Using those, the Poynting vector can be determined as follows.

By applying the appropriate conversions and starting from these equations, we obtain:

However, the result differs from the one in the book, where the relationship between the two intrinsic impedances is defined differently.

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