26A mirrors, lens

26A mirrors, lens - Announcements Physics 1C Lecture 26A...

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1 Physics 1C Lecture 26A "If Dracula can’t see his reflection in the mirror, how come his hair is always so neatly combed?" --Steven Wright Announcements Quiz scores posted; see us if your score is not posted Class average was ~ 81 – very GOOD. Today discuss mirrors and lenses Magnification Focal length Mirror equation Mirrors and Lenses As we have noted before, light rays can be diverted by optical systems to fool your eye into thinking an object is somewhere that it is not. The simplest optical systems are mirrors and lenses. Mirrors and lenses will divert light rays from an object source and create an image. Mirrors use reflection of light to divert the light rays. Lenses use refraction of light to divert the light rays. Mirrors and Lenses Images are formed at the point where rays actually intersect or appear to originate. There are two types of images: real and virtual . A real image is one in which light actually passes through the image point. Real images can be displayed on a screen. A virtual image is one in which the light does not pass through the image point. The light appears to diverge from that point. Virtual images cannot be displayed on screens. Mirrors and Lenses For both mirrors and lenses: The object distance , p , is the distance from the object to the mirror or lens. The image distance , q , is the distance from the image to the mirror or lens. The

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This note was uploaded on 02/11/2012 for the course PHYS 1C 1C taught by Professor Wethien during the Spring '11 term at UCSD.

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26A mirrors, lens - Announcements Physics 1C Lecture 26A...

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