Lens and images 1 ~L;S
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens =?6c&Z
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens & mO n]
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms ,X^3.ILz
images by bending the incoming light as it passes. Image formation can be understood by Ol RXgJ
treating the incoming light as rays and using a simple geometric arguments. Like much of basic `5?0y XK
physics, this approach isn’t completely correct but is a good approximation. Because of the Gc ` PO
geometric nature of the approximation, one can analyze a lens with geometry. This sort of .))j R:{3
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ?Te#lp;`~
system with ray tracings and with equations.
