This law predicts a phenomenon used in fiber optics that occurs above the critical angle, total internal reflection.
This physical result is usually derived by invoking a statement that can be observed in the constructive interference of secondary waves. That observation is predicted by Huygens's principle and results in a stationary trajectory. This law predicts a phenomenon used in fiber optics that occurs above the critical angle, total internal reflection. Resulting from Fermat's principle of least time, for 10 points, identify this law of optics, which holds that the ratio of the sines of two angles is equal to the ratio of the speed of light in two media, usually applied to boundaries between two different indices of refraction.
This physical result is usually derived by invoking a statement that can be observed in the constructive interference of secondary waves.
{Snell's} law [or {Descartes's} law]