Lens and images _ <FUS'"
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens $b1>,d'oz
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens DE?k|Get2
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms gqy>;A:kO
images by bending the incoming light as it passes. Image formation can be understood by (C #0
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treating the incoming light as rays and using a simple geometric arguments. Like much of basic +cqUp6x.
physics, this approach isn’t completely correct but is a good approximation. Because of the *
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geometric nature of the approximation, one can analyze a lens with geometry. This sort of e4SS'0|
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 2O
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system with ray tracings and with equations.
