Lens and images gf0PMc3l
,^.S0;D,Z
Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens EkRdpiLB
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens \ |4 Ca't
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms z @!^ow)`J
images by bending the incoming light as it passes. Image formation can be understood by B ;eW/#`
treating the incoming light as rays and using a simple geometric arguments. Like much of basic Rr+qg t;f5
physics, this approach isn’t completely correct but is a good approximation. Because of the LKqRvPnh
geometric nature of the approximation, one can analyze a lens with geometry. This sort of ZJ ^s}
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the @<vF]\Ce
system with ray tracings and with equations.
