Lens and images e[5= ?p@|
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens -s ]
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens 4i<V^go"
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms ">$.>sn{
images by bending the incoming light as it passes. Image formation can be understood by c{X>i>l>
treating the incoming light as rays and using a simple geometric arguments. Like much of basic i^Ba?r;*
physics, this approach isn’t completely correct but is a good approximation. Because of the s]=bg+v?j
geometric nature of the approximation, one can analyze a lens with geometry. This sort of
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approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 3WH"NC-O<
system with ray tracings and with equations.
