BERENICE ABBOTT / SCIENCE PHOTO LIBRARY BERENICE ABBOTT / SCIENCE PHOTO LIBRARY
Color enhanced photograph of a simulated parabolic mirror. This make-it-yourself mirror, with small pieces of glass fixed to a convex core, helps simulate a parabolic mirror. The repeated image of an eye serves as a construction purpose in this demonstration; the more eyes and the smaller they are, the more closely the mirror becomes to being a paraboloid surface.
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