This law was derived from Huygen's principle applied to points on a wavefront reaching a boundary at different times.
This law was derived from Huygen's principle applied to points on a wavefront reaching a boundary at different times. One rearrangement of this law can be used to find the critical angle, the angle beyond which total internal reflection occurs, which is simply the arcsine of the quotient of the speed of light in the two mediums. For 10 points, name this law of optics that gives the relationship between the angles of incidence and refraction for a wave transitioning between two media with different indices of refraction.
This law was derived from Huygen's principle applied to points on a wavefront reaching a boundary at different times.
{Snell}'s Law (or {law of refraction}; prompt on “Fermat's principle” or “principle of least time”]