lect5415 - Light Geometric Optics The Ray Model of Light...

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Unformatted text preview: Light: Geometric Optics The Ray Model of Light The ray model of light assumes that light travels in straight-line path called rays. Reflection For flat surfaces, it is found that the incident and reflected rays lie in the same plane with the normal to the surface. Law of Reflection The angle of incidence equals the angle of reflection. Diffuse reflection Specular reflection Image Formation by a Plane Mirror For a plane mirror the image distance (distance from mirror to image) equals the object distance. Real and Virtual Images How tall must a full-length mirror be? A woman 1.60m tall stands in front of a vertical plane mirror. What is the minimum height of the mirror, and how high must its lower edge be above the floor, if she is to be able to see her whole body? Assume her eyes are 10 cm below the top of her head). Formation of Images by Spherical Mirrors For an object infinitely far away (the sun or starts), the rays would be precisely parallel . If a mirror is small compared to its...
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lect5415 - Light Geometric Optics The Ray Model of Light...

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