Lens and images {(0Id !
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens EL +,jrU~
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens PUKVn+h
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms AY;<q$8j%,
images by bending the incoming light as it passes. Image formation can be understood by xB,/dMdTj
treating the incoming light as rays and using a simple geometric arguments. Like much of basic 2Fq=jOA)z$
physics, this approach isn’t completely correct but is a good approximation. Because of the O{ BW;Deo
geometric nature of the approximation, one can analyze a lens with geometry. This sort of Tzf$*Uje3
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ' &N20w
system with ray tracings and with equations.
