The formation of a rainbow and the splitting of light when it passes through a prism are examples of refraction. A pencil placed in a beaker of water looks bent due to refraction of light.
When light travels from one medium to another medium, it bends a little. This bending of light is called refraction. A medium can be a solid, a liquid or a gas. The amount by which light bends depends on the properties of the medium. Refraction of white light through a prism is called dispersion of light, and it clearly shows that light is made up of seven colors. Sound waves undergo refraction, as well.Learn More
White light bends or refracts as it enters and exits the triangular prism, with shorter wavelengths bending the greatest amounts and longer wavelengths refracting less, resulting in a light spectrum of different colors like a rainbow. Prisms are made of glass or other transparent material and cut so the angle of entry and exit maximize this effect.Full Answer >
White light is composed of all colors of light in the visible spectrum. A prism diffracts all the colors in white light at different angles, separating them.Full Answer >
Refraction is the bending of a beam of light when it enters a medium of different density. Light travels fastest in vacuum and in air. When light enters a medium of higher density, such as water, its velocity changes and causes it to bend or refract.Full Answer >
The index of refraction of any material is the speed of light in a vacuum divided by the speed divided by the speed of light in the medium. It is denoted with the letter "n."Full Answer >