Perfect Eye

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“A representation of the manner in which the image is formed upon the retina in the perfect eye. The curvature of the cornea, s s, and of the crystalline lens, c c, is just sufficient to cause the rays of light proceeding from the image, e e, to converge the right focus, m, upon the retina.” —Wells, 1857

Source

David A. Wells The Science of Common Things; A Familiar Explanation of the First Principles of Physical Science264

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