Lecture_14 - Lecture 14-1 Lecture Spherical Mirrors Types...

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Lecture 14 Lecture 14 -1 Spherical Mirrors Types of spherical mirrors concave mirror: the geometrical center is on the same side of the mirror as the object. convex mirror: the geometrical center is on the opposite side of the mirror as the object. A plane mirror can be thought of as a spherical mirror of an infinitely large radius of curvature r . Convex/concave viewed from front
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Lecture 14 Lecture 14 -2 Focal Point of a Spherical Mirror When parallel rays incident upon a spherical mirror, the reflected rays or the extensions of the reflected rays all converge toward a common point, the focal point of the mirror. Distance f is the focal length. Real focal point: the point to which the reflected rays themselves pass through. This is relevant for concave mirrors. f Rays can be traversed in reverse. Thus, rays which (would) pass through F and strike the mirror will emerge parallel to the central axis. why?
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Lecture 14 Lecture 14 -3 Convex Spherical Mirror Virtual focal point: the point to which the extensions of the reflected rays pass through. This is relevant for convex mirrors. f Rays can be traversed in reverse. Thus, rays which (would) pass through F and strike the mirror will emerge parallel to the central axis. The image is always virtual, reduced, has the same orientation as the object and closer behind the mirror. The field of view is, therefore, larger than that of a plane mirror.
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Lecture 14 Lecture 14 -4 Locating Images
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This note was uploaded on 04/23/2011 for the course PHYS 219 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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Lecture_14 - Lecture 14-1 Lecture Spherical Mirrors Types...

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