What is Snell's law?
Answers
Answer:
The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane. ... This law is also known as Snell's law of refraction. N = sin i/ sin r. This constant is also called the refractive index of the second medium with respect to the first.
Answer:
Snell’s law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each. This law was discovered in 1621 by the Dutch astronomer and mathematician Willebrord Snell (also called Snellius). The account of Snell’s law went unpublished until its mention by Christiaan Huygens in his treatise on light. In the Figure, n1 and n2 represent the indices of refraction for the two media, and α1 and α2 are the angles of incidence and refraction that the ray R makes with the normal (perpendicular) line NN at the boundary. Snell’s law asserts that n1/n2 = sin α2/sin α1.