Lens and images EN-H4F
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens 3cCK"kr
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens `?]rr0.}hp
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms O| 1f ^_S/
images by bending the incoming light as it passes. Image formation can be understood by vNz;#Je
treating the incoming light as rays and using a simple geometric arguments. Like much of basic v dH+>l
physics, this approach isn’t completely correct but is a good approximation. Because of the [EmOA.6
geometric nature of the approximation, one can analyze a lens with geometry. This sort of Rct"\{V')n
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the p<HTJ0
system with ray tracings and with equations.
