Lens and images AuY*x;~
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens WT}x Cni
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens lUw=YM
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms <@c@`K
images by bending the incoming light as it passes. Image formation can be understood by h~ O^~"jc
treating the incoming light as rays and using a simple geometric arguments. Like much of basic ZuKOscVS#T
physics, this approach isn’t completely correct but is a good approximation. Because of the d+"F(R9
geometric nature of the approximation, one can analyze a lens with geometry. This sort of 5Ha(i [d
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ,[3} t%Da
system with ray tracings and with equations.
