Lysbryting

Lysbryting is a phenomenon observed when light travels from one medium to another with a different refractive index. This change in medium causes the light ray to bend or change direction. The extent of this bending is determined by the refractive indices of the two media and the angle at which the light strikes the boundary between them. This principle is described by Snell's Law, which mathematically relates these quantities.

When light enters a denser medium, such as from air to water, it slows down and bends towards the normal (an imaginary line perpendicular to the surface). Conversely, when light moves from a denser medium to a less dense one, it speeds up and bends away from the normal. This optical phenomenon is responsible for many everyday observations, including the apparent distortion of objects submerged in water, the formation of rainbows when sunlight passes through water droplets, and the functioning of lenses in eyeglasses, cameras, and telescopes. Understanding lysbryting is fundamental to the study of optics and has numerous practical applications in science and technology.