Lens and images lhE]KdE3
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens qldm"Ul
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens pd N8 hJ
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms 7a_u=\,
images by bending the incoming light as it passes. Image formation can be understood by +#>nOn(B
treating the incoming light as rays and using a simple geometric arguments. Like much of basic vfT
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physics, this approach isn’t completely correct but is a good approximation. Because of the Xeja\5zB
geometric nature of the approximation, one can analyze a lens with geometry. This sort of { LKW%G7
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 9;*B*S~znW
system with ray tracings and with equations.
