Lens and images ZLN79r{T
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens aR c2#:~;
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens o 9 ?#;B$
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms R9-Ps qmF
images by bending the incoming light as it passes. Image formation can be understood by 40M/Gu:
treating the incoming light as rays and using a simple geometric arguments. Like much of basic gO9\pI 2
physics, this approach isn’t completely correct but is a good approximation. Because of the 5N5Deb#V
geometric nature of the approximation, one can analyze a lens with geometry. This sort of ~T'!.^/
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ah8xiABa
system with ray tracings and with equations.
