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Reflection
Grade 8: Topic 2 in Light and Optical Systems
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Reflection
the process in which light strikes a surface and bounces back
Normal line
a line perpendicular to the surface which light is hitting
Angle of Incidence
angle between normal line and the incidence ray
Incidence Ray
The light beam from the source
Angle of Reflection
The angle between the normal line and the reflection ray
Plane mirror
A mirror with a flat surface
Law of Reflection
Angle of Reflection is equal to Angle of Incidence
Plane
An imaginary flat surface
Convex
when a surface 'bulges' out
Concave
When a surface caves in
Smooth Surfaces
Reflect light uniformly
Rough Surfaces
Reflect light randomly
