25 H phy mirror cutnell chapter 17 student copy (1).docx

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Chapter 25 - Reflection and Mirrors 25.1 WAVEFRONTS AND RAYS Wave fronts are usually the crest or condensations of a wave. 25.2 THE REFLECTION OF LIGHT A. Law of reflection 1. Angle of incidence equals angle of reflection when measured from the normal 2. Definitions a. normal - imaginary line perpendicular to a reflective surface b. specular reflection - parallel light rays reflected off a smooth surface (like a mirror) c. diffused reflection - scattering of reflected light from a rough surface 3. Specular and diffused reflection both obey the law of reflection. a. Specular reflection b. Diffused reflection
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Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection . 29.3 FORMATION OF IMAGES FROM PLANE MIRRORS A. The virtual image for a flat mirror (perpendicular to the floor) appears the same distance behind as the object in front. It also appears the same size.
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  • Winter '19
  • Rene Bishop
  • Specular reflection, Geometrical optics, Angle of incidence equals angle of reflection

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