Refraction (3 of 5) What is Total Internal Reflection? An Explanation

Описание: Describes the concept of total internal reflection, derives the equation for the critical angle and shows one example.

Total internal reflection is the complete reflection of a ray of light that is traveling within one medium, such as water or glass, from the boundary with a second medium back into the first medium. The phenomenon occurs when the angle of incidence is greater than a certain limiting angle, called the critical angle. In general, total internal reflection takes place at the boundary between two transparent media when the ray of light is travel from a medium with a higher index of refraction into a medium with a lower index of refraction.

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