THE LAWS OF REFLECTION
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The incident ray and the reflected ray behave in predictable
ways, which leads to the two laws of reflection:
1. The angle of incidence equals the angle of reflection.
2. The incident ray (ri), the reflected ray (rr), and the
normal all lie in the same plane
Laws of Reflection
Lesson Info: Laser Reflection Gizmo | ExploreLearning
11.6
Types of Reflection
1. Specular Reflection:
• light reflects off smooth, shiny surface like mirror
• if incident rays are parallel, reflected rays will be parallel
2. Diffuse Reflection:
• when light reflects off rough surface like chalk board
• if ri are parallel, the rr will NOT be parallel
• angle of incidence (өi) is still equal to the angle of reflection
but normals are not parallel to each other
IMAGE CHARACTERISTICS
IN PLANE MIRRORS
11.7
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When you look into a plane mirror, you see an image that has certain
characteristics.
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The characteristics can be described in terms SALT
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size, attitude (which way the image is oriented), location, and type
(whether or not light actually arrives at the image location).
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The image in a plane mirror is the same size as the object, upright,
behind the mirror, and virtual.
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Images Formed by Mirrors and their Characteristics