Refraction at a plane surface
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What refraction means

What refraction means

Ray diagram of a light ray passing from air into glass at a plane boundary with the normal, angle of incidence, and angle of refraction labelled

Refraction is the change in direction of light when it crosses a boundary because its speed changes in the new medium. If a ray hits exactly along the normal, it changes speed but not direction.

Refraction at a plane surface Lesson

  1. A Level
  2. /Physics
  3. /Refraction at a plane surface