Lens and images t-hN4WKH_A
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens }?d
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have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens 1B`0.M'd
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms rI]n4>k{
images by bending the incoming light as it passes. Image formation can be understood by aj]%c_])(
treating the incoming light as rays and using a simple geometric arguments. Like much of basic `ucr;P
physics, this approach isn’t completely correct but is a good approximation. Because of the 4d ]T`
geometric nature of the approximation, one can analyze a lens with geometry. This sort of j98>Jr\
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the A$'rT |>se
system with ray tracings and with equations.
