Lesson: Refraction of Light Physics • Second Year of Secondary School

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In this lesson, we will learn how to describe refraction as the speed and direction change of light when passing between media of different densities.

Lesson Plan

Students will be able to

recognize that light travels at different speeds in different media,
recognize that the wavelength of light is different in different media but that frequency is constant,
recognize that the greater the refractive index of a substance, the slower light travels in the substance,
recognize that light incident nonnormally on a media boundary changes propagation direction,
define angle of refraction,
use Snell’s law to determine incident and refracted angles and values of refractive index.