6 terms

Light Definitions

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Refraction
The changing of direction of light when it goes from one medium to another
Reflection
The bouncing of a wave off a surface
Laws of Reflection
1. Angle of incidence equals angle of reflection
2. Incident ray, reflected ray and normal lie on the same plane
Laws of Refraction
1. Sine of angle of incidence is proportional to the sine of angle of refraction.
2. Angle of incidence, angle of refraction and normal lie on the same plane
Critical Angle
The critical angle is the angle of incidence in the more dense medium that has a corresponding angle of refraction equal to 90 degrees
Total Internal Reflection
When light travels from a more dense to a less dense substance and the angle of incidence is greater than the critical angle total internal reflection occurs
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