Mees, C. E. Kenneth (Charles Edward Kenneth), 1882-1960, Eastman Kodak Company · Rochester, N.Y. : Eastman Kodak Company · leaf 17
CHAPTER II. LIGHT AND VISION. Light is the name which we give to the external agency which enables us to see. In order to see things we must have something which enters the eye and a brain to explain it to us.^ That which enters the eye is what we call light. … permanent change, which can be pjg 5 developed into a picture, and if Diagram of Human Eye. the light falls upon the film for too long a time the film is spoiled, while the retina merely acts as a medium to transmit to the brain the sensation of the light that falls upon it, and when the light…
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Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
