Refractive index: Difference between revisions

Revision as of 00:47, 7 September 2024

Revision as of 00:49, 7 September 2024

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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 critical angle of 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===