So I've begun taking some fundamental art history/discussion classes in college this summer, and one thing that has struck my interest has been the golden mean / golden ratio. We touched very lightly on the subject (where it came from, and examples of its use), but I've been unable to really draw any further information out of my instructors or our tests on the details of its application in art.
Are there any good source material anyone knows about discussing its use in art? How it is figured in terms of an image's composition (like in The Creation of Adam)? How, if you wanted to experiment around, you might best employ the ideas surrounding the golden mean and proportions? Moreover, I'm just interested in the details of its application, how artists use it, etc.
Thanks for anyone who has any nice links!