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ReflRefr(1) - Diuse Reection Rough surfaces cause light to...

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Diffuse Reflection Rough surfaces cause light to reflect in ran- dom directions. Reflected light appears to be coming from all directions Brightness of the surface appears the same when viewed from any direction. The brightness of the surface does not depend on your point of view. 1
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Specular Reflection Surface is smooth and polished so inci- dent light gets reflected mostly in one di- rection. If the reflected light hits your eye directly, you see a bright spot .The rest of the sur- face appears dimmer. If you move your eye the bright spot moves . The brightness of the surface depends on your point of view. 2
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Reflection of Sound Echo: When you yell at a canyon wall you hear the sound reflect back to you a little later. Reverberation: When echos reflect back and forth between surfaces (such as canyon walls). (These are ”multiple reflections”) Acoustics: Refers to qualities of sound re- flection in a room and the overall effect on sound quality.
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