RegisterSnell lawSnell law describes the relation between the angle q (under this angle, wave impacts the planar boundary of two media), and the angle q2 (angle between the direction of propagation and the normal to the boundary in the second medium). If refraction index of the first medium is n1 (wave leaves this medium), and refraction index of the second medium is n2 (wave enters this medium), then angles are related by the following equation: Back
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