As metal has a high refraction index, it is possible to have Brewster's Angle for Metal when the light incident from the air? Is it possible to derive from any formula?
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So there is pseudo-Brewster angle for metals (Citation: Journal of Applied Physics 78, 4799 (1995); doi: 10.1063/1.359763):
It is a subject of textbooks that the reflectivity of metals is a function of the angle of incidence and that it has a minimum for a given wavelength at the pseudo-Brewster angle. Consequently, the absorption is maximal at this angle and can be much higher than the usual low absorption of metals for normal incidence.
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$\begingroup$ ... and it's derived using the same Fresnel relations that are used to find Brewster's angle for glass. $\endgroup$– garypCommented Oct 11, 2022 at 11:05