Lens and images +C{ %pF
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens ZZa$ /q"
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens pEjA*6v|,
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms ?`hk0q X3
images by bending the incoming light as it passes. Image formation can be understood by qR~s& SC#
treating the incoming light as rays and using a simple geometric arguments. Like much of basic nx(O]R,Sw
physics, this approach isn’t completely correct but is a good approximation. Because of the 7]q $ sQ
geometric nature of the approximation, one can analyze a lens with geometry. This sort of %EuXL% B
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the p1=sDsLL
system with ray tracings and with equations.
