B Does Brewster's Law Apply to Opaque Materials?

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Brewster's Law can apply to opaque materials, but caution is needed in defining the refractive index. The law is relevant when considering whether there is an angle where no p-polarized light is reflected or the angle of maximum polarization difference. The Fresnel equations are recommended for analyzing p-polarization in these cases. Opaque materials are often modeled with a complex index of refraction, which alters the results while keeping the formulas unchanged. Understanding these nuances is essential for accurate application of Brewster's Law to opaque materials.
Vinith
Does Brewster law applicable to Opaque material?
 
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Depends on what exactly you want to know.
If there is an angle where no p-polarized light is reflected?
Or whether the angle of maximum polarization difference in reflection is arctan(n1/n2)? (What would you do with the complex angle?)

I propose you use the Fresnel equations (https://en.wikipedia.org/wiki/Fresnel_equations) for p polarization and figure it out for yourself. They should work in either case.
 
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Vinith said:
Does Brewster law applicable to Opaque material?

Yes, but you have to be a little more careful about how the refractive index is defined. Often, opaque (absorptive) materials are modeled with a complex index of refraction, so while the formulas themselves are unaltered, the complex index of refraction modifies the results:

https://www.physicsforums.com/threads/fresnels-equation-with-complex-n.512034/
 
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