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chp40_1 - of the mirror For spherical mirrors a good...

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PHY2061 R. D. Field Department of Physics chp40_1.doc University of Florida Spherical Mirrors Vertex and Center of Curvature: The vertex , V , is the point where the principal axis crosses the mirror and the center of curvature is the center of the spherical mirror with radius of curvature R . Real and Virtual Sides: The "R" or real side of a spherical mirror is the side of the mirror that the light exits and the other side is the "V" or virtual side . If the center of curvature lies on the R-side then the radius of curvature, R , is taken to be positive and if the center of curvature lies on the V-side then the radius of curvature, R , is taken to be negative . Focal Point: A light ray parallel to the principal axis will pass through the focal point , F , where F lies a distance f ( focal length ) from the vertex
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Unformatted text preview: of the mirror. For spherical mirrors a good approximation is f = R/2 . Concave and Convex Mirrors: A concave mirror is one where the center of curvature lies on the R-side so the R > 0 and f > 0 and a convex mirror is one where the center of curvature lies on the V-side so that R < 0 and f < 0 . concave f > 0 convex f < 0 Flat Mirror: A flat mirror is the limiting case where the radius R (and thus the local length f ) become infinite. Principal Axis C F Light Ray Enters R = Radius of Curvature C = Center of Curvature F = Focal Point V = Vertex Concave Mirror R-side V-side V Light Ray Exits R Principal Axis C F Light Ray Enters Convex Mirror R-side V-side R = Radius of Curvature C = Center of Curvature F = Focal Point V = Vertex Light Ray Exits R V...
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