Lens and images LQ`s> q
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens -KhNsUQk
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens y^zII5|s
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms f6vhW66:?x
images by bending the incoming light as it passes. Image formation can be understood by ayfR{RYi
treating the incoming light as rays and using a simple geometric arguments. Like much of basic O;z:?
physics, this approach isn’t completely correct but is a good approximation. Because of the [Ul"I-K
geometric nature of the approximation, one can analyze a lens with geometry. This sort of kd)Q$RA(
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 1K?R A*aj
system with ray tracings and with equations.
