Lens and images kw7E<aF!
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens PsS.lhj0"
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens FF7?|V !Q
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms ytb1h Fs
images by bending the incoming light as it passes. Image formation can be understood by L)S
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treating the incoming light as rays and using a simple geometric arguments. Like much of basic M"msLz
physics, this approach isn’t completely correct but is a good approximation. Because of the !/! Fc'A
geometric nature of the approximation, one can analyze a lens with geometry. This sort of ux 17q>G
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the bweA mSs
system with ray tracings and with equations.
