Lens and images O Qnb^fabY
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens N[=c|frho
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens gh9Gc1tKt
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms $sILCn
images by bending the incoming light as it passes. Image formation can be understood by op8[8 pt%
treating the incoming light as rays and using a simple geometric arguments. Like much of basic >DM^/ EAG{
physics, this approach isn’t completely correct but is a good approximation. Because of the q%S^3C&
geometric nature of the approximation, one can analyze a lens with geometry. This sort of :<p3L!?8y
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the E\5Cf2Ox
system with ray tracings and with equations.
