Lens and images 8( ^;h 2O!
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens PKT/U^2X]
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens wX 3x.@!:
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms PQmgv&!DP
images by bending the incoming light as it passes. Image formation can be understood by piRP2Lbm*
treating the incoming light as rays and using a simple geometric arguments. Like much of basic xwwy9:ze*l
physics, this approach isn’t completely correct but is a good approximation. Because of the +v 9@du
geometric nature of the approximation, one can analyze a lens with geometry. This sort of u0;FQr2
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the nyZUf{:
system with ray tracings and with equations.
