Lens and images :M6v<Kg{;
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens \8Q OZjy
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens J'|=J
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms dGBjV #bNT
images by bending the incoming light as it passes. Image formation can be understood by jBYv Oy*$Q
treating the incoming light as rays and using a simple geometric arguments. Like much of basic pN5kcvQ
physics, this approach isn’t completely correct but is a good approximation. Because of the ?#= xx.cF
geometric nature of the approximation, one can analyze a lens with geometry. This sort of !Z:XSF[T
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the )/>BgXwH
system with ray tracings and with equations.
