Lens and images 2 ,;+)
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens .7Ys@;>B
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens mhp5}
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms 7vcYI#(2
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images by bending the incoming light as it passes. Image formation can be understood by f| 3` 8JU
treating the incoming light as rays and using a simple geometric arguments. Like much of basic /%rbXrR4w
physics, this approach isn’t completely correct but is a good approximation. Because of the ]O DC+q1
geometric nature of the approximation, one can analyze a lens with geometry. This sort of Yk:fV &]
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 0;3;Rs
system with ray tracings and with equations.
