Lens and images vu)EB!%[
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens #M~yt`R~
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens i!%WEHPe
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms EPJ>@A>;D
images by bending the incoming light as it passes. Image formation can be understood by H< |}p Z
treating the incoming light as rays and using a simple geometric arguments. Like much of basic bVz<8b6h'-
physics, this approach isn’t completely correct but is a good approximation. Because of the ~qZ6I)?
geometric nature of the approximation, one can analyze a lens with geometry. This sort of @&G} '6vF!
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the SZT n=\
system with ray tracings and with equations.
