Lens and images ]
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens xxX/y2\
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens %]4-{%v
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms Df=q-iq<{/
images by bending the incoming light as it passes. Image formation can be understood by QX Q
treating the incoming light as rays and using a simple geometric arguments. Like much of basic D[Iq n
physics, this approach isn’t completely correct but is a good approximation. Because of the V u]h4S :
geometric nature of the approximation, one can analyze a lens with geometry. This sort of }C6@c1myq-
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 8OAg~mQ15(
system with ray tracings and with equations.
