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Homework Statement
Considering a wave traveling in air (permittivity and permeability 1), when the wave hits the surface of a solid, there is a reflected wave back into air, and a transmitted wave into the material. Assuming the material has a permeability of 1 and the wave hits the material at normal incidence, derive an equation for the reflectivity in terms of the index of refraction of the material and extinction coefficients.
Homework Equations
B = √(εμ) * E where ε is the permittivity and μ is the permeability
n = √(εμ)
The Attempt at a Solution
I believe that this has something to do with the Fresnel equations, though I'm not too familiar with them. Otherwise I'm not sure where to begin with this. I don't see how to relate E and B to refractive index and extinction coefficients.
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