Lens and images 1Q}mf !Y
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens ,pq{& A
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens &"uV~AM
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms 1u]P4 Gf=
images by bending the incoming light as it passes. Image formation can be understood by !c<w S Q,
treating the incoming light as rays and using a simple geometric arguments. Like much of basic &jV_"_3n
physics, this approach isn’t completely correct but is a good approximation. Because of the d0 er^ ~
geometric nature of the approximation, one can analyze a lens with geometry. This sort of =QV ::/
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the (}!C4S3#
system with ray tracings and with equations.
