Snell’s Law
The Snell ‘s law in a formula used to determine the relationship that exists between the path taken by a beam of light crossing the boundary or the surface of separation between two contact substances and the refractive index of each of they. This law was discovered in 1621 by the Dutch astronomer and mathematician Willebrord Snell . Snell’s account of the law was not published until Christiaan Huygens mentioned … Read more