text: Applying this law to anisotropic media normally requires finding the roots to a sixth-order polynomial equation.
full_question: Applying this law to anisotropic media normally requires finding the roots to a sixth-order polynomial equation. Some metamaterials achieve a “reversal” of this law. Two common derivations of this law are from the boundary conditions of Maxwell’s equations and from Fermat’s principle of least time. In fiber optics, this law predicts that total internal reflection will occur at values that exceed the critical angle. For 10 points, name this law which holds that the ratio of two sines of the angles of incidence is equal to the inverse ratio of two indices of refraction.
first_sentence: Applying this law to anisotropic media normally requires finding the roots to a sixth-order polynomial equation.