Snell's law
= Snell's law
{wiki=Snell's_law}
Snell's law, also known as the law of refraction, describes how light rays change direction when they pass from one medium into another with a different refractive index.
= Snell's law
{wiki=Snell's_law}
Snell's law, also known as the law of refraction, describes how light rays change direction when they pass from one medium into another with a different refractive index.