Notes on Chapter 34 - Chapter 34: IMAGES 34-1 What is...

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7/13/2010 1 Chapter 34: IMAGES Image formation is important in many areas including: TV Computers Satellite imaging Cameras, telescopes, microscopes The human eye etc 34-1 What is Physics?
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7/13/2010 2 Two Types of Image To form a virtual image the rays of light that enter our eye appear to come from the image. This is the type of image formed by a plane mirror. A virtual image is an illusion because it does not really exist 34-2 A real image is one that can be formed on a surface and hence the rays of light actually pass through the image
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7/13/2010 3 Highway mirage Mirage The common pool mirage is an example of virtual image
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7/13/2010 4 Virtual Images Formed by Plane Mirrors Extended object Point object For a plane mirror: i = - p Distance to the mirror for a (real) object and real image is positive Distance to the mirror for a virtual image is negative 34-3
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7/13/2010 5 Spherical Mirrors 34- 4 Concave Mirror Center of curvature C is finite and in front of mirror Smaller field of view the image is further behind: | i| > p Image height is greater than the object height Plane mirror Center of the curvature is at infinity Wide field of view Image distance is equal to object distance: |i| = p Image height is equal to the object height
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7/13/2010 6 Convex Mirror Center of curvature C is finite and is behind the mirror Increased field of view (practical use – side mirror of your car) the image is closer to the mirror: |i| < p Image height is smaller than the object height
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7/13/2010 7 Focal Point of Spherical Mirrors Relationship between the focal length f and the radius of curvature, r : 2 r f =
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7/13/2010 8 34- 5
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This note was uploaded on 09/30/2010 for the course PHYS MTH 203 taught by Professor None during the Spring '10 term at American University of Sharjah.

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Notes on Chapter 34 - Chapter 34: IMAGES 34-1 What is...

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