Lens and images Sdp1h0E}7=
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens gp =0;#4
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have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens p<4':s;*
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms WM26-nR
images by bending the incoming light as it passes. Image formation can be understood by " Q1hP9xV
treating the incoming light as rays and using a simple geometric arguments. Like much of basic FhGbQJ?[3
physics, this approach isn’t completely correct but is a good approximation. Because of the G <'S
geometric nature of the approximation, one can analyze a lens with geometry. This sort of &k vVMn ok
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the qM+T Wp
system with ray tracings and with equations.
