physics

the casual typical exagurational subject..

Wednesday, August 15, 2007

the difference between human eye and a camera

the human eye:

Eyes are organs of vision that detect light.
Different kinds of light-sensitive organs are found in a variety of organisms.
The simplest eyes do nothing but detect whether the surroundings are light or dark, while more complex eyes can distinguish shapes and colors. The visual fields of some such complex eyes largely overlap, to allow better depth perception (binocular vision), as in humans; and others are placed so as to minimize the overlap, such as in rabbits and chameleons.


All of the individual components through which light travels within the eye before reaching the retina are transparent, minimising dimming of the light. Light enters the eye from an external medium such as air or water, passes through the cornea, and into the first of two humours, the aqueous humour. Most of the light refraction occurs at the cornea which has a fixed curvature. The first humour is a clear mass which connects the cornea with the lens of the eye, helps maintain the convex shape of the cornea (necessary to the convergence of light at the lens) and provides the corneal endothelium with nutrients.

(wikipedia.com)

as it stated the human eye has a lens where the ligth is entering trough a focus
using a converging lens because the human eye has a lens which is converging

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