Lens and images >z'kCv
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens f; <qGM.#|
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens Q`nsL)J
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms Sm6hyZFy
images by bending the incoming light as it passes. Image formation can be understood by wAC*D=Qj
treating the incoming light as rays and using a simple geometric arguments. Like much of basic K ZFnp=i
physics, this approach isn’t completely correct but is a good approximation. Because of the <!ewb=[_$
geometric nature of the approximation, one can analyze a lens with geometry. This sort of #7!P3j
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the }@
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system with ray tracings and with equations.
