Lens and images OhA^UP01-
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens eLHa 9R{)B
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens wZ
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in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms o'x_g^ Y
images by bending the incoming light as it passes. Image formation can be understood by - L^0-g
treating the incoming light as rays and using a simple geometric arguments. Like much of basic dg!1wD
physics, this approach isn’t completely correct but is a good approximation. Because of the X+(aQ
>y
geometric nature of the approximation, one can analyze a lens with geometry. This sort of HB/
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approach is called ray tracing. In today’s lab, we will form images with lens and analyze the PO=ZxG
system with ray tracings and with equations.
