Discerning Detail in an Image |
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We see because light from objects is focused by the lens to form an image on the retina.
The optic nerve sends retina stimulation signals to the brain which decodes the image.
Distant things form tiny images that cover only a few retina cells. Detail cannot be perceived. Nearby things form larger images that cover thousands of retina cells. Detail then becomes apparent. As things come closer, more retina cells become involved in detecting the image and therefore we see more detail. Microscopes and telescopes enlarge the image that forms on the retina from small or distant objects and enable us to see more detail. |
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