Lens and images M %~kh "
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens oWmla*nCKL
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens |+;"^<T)l
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms >q`X%&l_
images by bending the incoming light as it passes. Image formation can be understood by Npqb xb
treating the incoming light as rays and using a simple geometric arguments. Like much of basic VM[8w`
physics, this approach isn’t completely correct but is a good approximation. Because of the `Nj|}^A
geometric nature of the approximation, one can analyze a lens with geometry. This sort of I?QKd@
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the n>WS@ b/o
system with ray tracings and with equations.
