Brewster’s angle for polarization by reflection (23-14)

Question 1 of 3

Question

Index of refraction of medium 2

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Review

The sine of an angle divided by its cosine equals the tangent of the angle. So $\tan{\theta_{\mathrm{B}}} = n_2/n_1$ , or

If the angle of incidence for unpolarized light is something other than $\theta_{\mathrm{B}}$ , the reflected ray is partly polarized. If unpolarized light strikes the boundary perpendicular to it, so $\theta_1 = 0$ , there is no change in polarization of the reflected light.