Refraction (5 of 5) Index of Refraction, An Explanation

Describes the index of refraction and show how to calculate the index of refraction. The index of refraction (n) of a material is a dimensionless number that describes how fast light travels through the material. It can be seen as the factor by which the speed and the wavelength of light are reduced with respect to their values in a vacuum. The index of refraction is calculated as n = c / v. Where c is the speed of light in a vacuum (3.00 x 10^8 m/s) and v is the velocity of light in the material. For example, the index of refraction for water is 1.33, this means that travels slower in water then in a vacuum. You can see a listing of all my videos at my website, http://www.stepbystepscience.com Please support my channel by doing all of the following; (1) Subscribe, get all my excellent physics, chemistry and math videos. (2) Give me a thumbs up for this video. (3) Leave me a nice positive comment. (4) Sharing is Caring, share this video with all of your friends.