Snell’s Law, formulated by the mathematician and physicist Willebrord Snellius, describes how light refracts when passing from one medium to another with a different refractive index.
It states that the sine of the angle of incidence multiplied by the refractive index of the first medium is equal to the sine of the angle of refraction multiplied by the refractive index of the second medium. Mathematically, it is expressed as:
This law is fundamental in optics and explains the deviation of light when changing media.
