lec16 - diffuse reflection . When parallel rays of light is...

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Wavefronts and Rays Wavefronts are surfaces on which all points of a wave are in the same phase of motion. Rays are lines that are perpendicular to the wavefronts and points in the direction of the wave. In 3-dimensions, a point source (e.g. a pulsating tiny sphere) generates spherical wavefronts Waves whose wavefronts are flat surfaces are called plane waves . The rays of a plane wave are parallel to each other. Spherical Wavefronts Wavefronts Rays Rays Plane Waves Spherical Waves from a point source
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The Reflection of Light When parallel rays of light is incident on an irregular, rough surface, the reflected rays are not parallel to each other. The reflection is called a
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Unformatted text preview: diffuse reflection . When parallel rays of light is incident on a smooth, plane surface, the reflected rays are also parallel to each other. This type of reflection is called specular reflection . Specular reflections obey the Law of Reflection The incident ray, the reflected ray and the normal to the reflecting surface all lie in the same plane. The angle of incidence ( i ) equals the angle of reflection ( r ): i = r Image formation by a plane mirror A plane mirror forms an upright, virtual image. The image distance is equal to the object distance The image height is equal to the object height...
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This note was uploaded on 12/06/2011 for the course PHYSICS 111&112 taught by Professor Unknown during the Spring '11 term at Ohio State.

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lec16 - diffuse reflection . When parallel rays of light is...

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