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I need to learn basic optics for a high school academic competition. Does anyone know any good places, preferably free and online, to learn the basics of optics, like lenses, angles of incidence, etc.? I can't seem to find an MIT OpenCourseWare course addressing the issue.

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up vote 3 down vote accepted

Scroll down till #145, that's where optics starts. If you want just lenses, start with the 'virtual image' one.

If not for your online-only request, I would have suggested Resnick-Halliday-Walker. IMHO, that's just about the best book for classical anything

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Well, it said "preferably" free and online, not "necessarily," so I think HRW is a fair answer to this question. – David Z Feb 22 '12 at 3:50
@DavidZaslavsky Good point. – Manishearth Feb 22 '12 at 3:52
Thanks for the link. I like Khan Academy's more wordy explanation - it let's me get an intuitive and quantitative understanding. Also, thanks for the book link although it's a bit out of my means. – Eric Thoma Feb 23 '12 at 1:51

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