The history of Snell’s Law goes back to 1621 when Dutch astronomer and mathematician Willebrord Snell discovered the laws of refraction. Snell’s Law is the basis of optical technology. Optical components and systems are designed using Snell’s Law and the laws of reflection. An essential application of Snell’s Law is fiber optics. Fiber optic cables are used in telecommunications, especially data transmission in high-speed servers.