Lens and images us(sZG
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens <PH3gyC
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens P1vF{ e
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms >7eu'
images by bending the incoming light as it passes. Image formation can be understood by Q q6%53
treating the incoming light as rays and using a simple geometric arguments. Like much of basic JT}dor
physics, this approach isn’t completely correct but is a good approximation. Because of the im_0ur&'
geometric nature of the approximation, one can analyze a lens with geometry. This sort of \["1N-q b
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the B]CS2LEqh
system with ray tracings and with equations.
