Lens and images PL;PId<9w
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens CC Z'(Tkq
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens gXrPZ|iS
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms X
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images by bending the incoming light as it passes. Image formation can be understood by *G'R+_tdE
treating the incoming light as rays and using a simple geometric arguments. Like much of basic ={HY wP ;
physics, this approach isn’t completely correct but is a good approximation. Because of the ZbmBwW_ 7
geometric nature of the approximation, one can analyze a lens with geometry. This sort of ^[]q/v'3m!
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the Nqf6CPXE
system with ray tracings and with equations.
