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Vocabulary
Vocabulary
Normal: Word coming from Latin, "Norma" meaning a right angle. The normal in optic is an imaginary line at right angle to surface.
Incident ray: Ray that striking the surface
Reflected ray: Ray being a bended incident ray by mirror.
Refracted Ray: Ray entering different medium and is bent away.
Introduction
Introduction
Angle of incidence = angle of reflection.
Incident ray, the reflected ray and normal all lie in same plane.
Let's say we have a light ray that hits the surface at an angle incidence of 30° between the normal line.
The angle on the other side will also be 30°.
The normal line always forms a right angle with the angle of incidence and reflection.
Below the 30° will be a 60° on both side.
Therefore, for all angles to respect the "Law of Reflection" all angle need to have the same angles on both sides of the normal line
A. Specular Reflection
A. Specular Reflection
The reflection of light off a smooth, shiny surface
Reflected rays will all be parallel to each other.
A. Specular Reflection
A. Specular Reflection
Diffuse Reflection
Results from the reflection of light off an irregular or dull surface.
People with dyslexia…
People with dyslexia…
They can have difficulty reading – the contrast between white paper and black text can make reading difficult…
- Drawing Mirrors and Light Rays
Reflecting Light off Surfaces
Reflecting Light off Surfaces
Diffuse Reflection
Results from the reflection of light off an irregular or dull surface
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