Lunch atop a (Springfield) skyscraper

Lunch atop a (Springfield) skyscraper
by andy-m                

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Aug
28
awarded  Scholar
Aug
28
accepted Where exactly would the focal length of a lens in the ray diagram fall?
Aug
28
comment Where exactly would the focal length of a lens in the ray diagram fall?
Thanks. Any pointers to resources on ray diagrams for a compound lens will be greatly appreciated.
Aug
24
awarded  Student
Aug
24
asked Where exactly would the focal length of a lens in the ray diagram fall?