Lens and images /6_|]ijc
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens a/< Csad
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens 9+keX{/c
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms -@ZiS^l
images by bending the incoming light as it passes. Image formation can be understood by @'=Uq
treating the incoming light as rays and using a simple geometric arguments. Like much of basic rSYi<ku
physics, this approach isn’t completely correct but is a good approximation. Because of the OaL\w
D^
geometric nature of the approximation, one can analyze a lens with geometry. This sort of \.g\Zib )
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ;vb8G$
system with ray tracings and with equations.
