Lens and images |t~ *!0>3
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens C!U$<_I\2
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens 9XhcA
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms B Q2N_*v
images by bending the incoming light as it passes. Image formation can be understood by XTRF IY
treating the incoming light as rays and using a simple geometric arguments. Like much of basic 4UHviuOo8
physics, this approach isn’t completely correct but is a good approximation. Because of the z"-oD*ICw
geometric nature of the approximation, one can analyze a lens with geometry. This sort of g3f; JB
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the <m~{60{
system with ray tracings and with equations.
