Figure 2-3 shows the relationship between wavelength and frequency.
Figure 2-3.The relationship of wavelength to
Reflection occurs when light that strikes an object bounces off its surface.
When a surface is smooth and polished, the reflection is orderly, or specular.
Specular light reflects at the same angle to the surface as the incoming light.
When a surface is irregular, light reflects irregularly and diffuses reflecting
light in different directions. Practically all surfaces reflect both specular and
Figure 2-4 illustrates specular and diffused light reflection.
Figure 2-4.Specular and diffused light reflections.
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