Lens and images <P1sK/IZb
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens KC{ HX?
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens My!<_Hp-W
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms 7w{>bYP
images by bending the incoming light as it passes. Image formation can be understood by x5}R u0Z
treating the incoming light as rays and using a simple geometric arguments. Like much of basic 7*r7Q '
physics, this approach isn’t completely correct but is a good approximation. Because of the 8wqHr@}p
geometric nature of the approximation, one can analyze a lens with geometry. This sort of BI-xo}KI
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the }-R|f_2Hp
system with ray tracings and with equations.
