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Johnjbarton (talk | contribs) →Complex refractive index: Remove the wikilink, the article does not cover this case. |
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: <math>\sqrt{n_1^2+\kappa_1^2}\sin\theta_1=\sqrt{n_2^2+\kappa_2^2}\sin\theta_2</math>
Accordingly, the total internal (or external) reflection critical angle can be calculated as:<math display="block">\theta_\mathrm{c} =\arcsin\!\left(\frac{|\underline{n_2}|}{|\underline{n_1}|}\right)\!= \arcsin\!\left(\frac{\sqrt{n_2^2+\kappa_2^2}}{\sqrt{n_1^2+\kappa_1^2}}\right)\!.</math>
===Total internal reflection===
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