Through our eyes
2007-03-18 07:23:12
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answer #1
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answered by Anonymous
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Ill give you concise version fo what i know .
Light enters the eye . The pupil moves to the correct size to let enough light particles ( called photons) into the eye. In darkness it will be larger in light conditions smaller. The light will eventually hit the back of the retina. However first it must go through 4 types of cell. Before reaching the photosensitive cells which are the rods and cones. Basic terms the lights enter the rods and cones. The light photons are then passed on from the rods and cones to the ganglion cells which are types of neurons. Once 10 photons are sent to the neuron the ganglion cell will fire sending a response up the optic nerve to the brain which is when we recognise the light image.
2007-03-18 14:39:01
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answer #2
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answered by mintycakeyfroggy 6
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Light is given off by our sun in discrete packages of energy, called "photons". Each photon has a distinct vibration, or frequency, which corresponds to a color of light, infrared (heat), or on the other end of the spectrum, ultraviolet.
The light bounces off an object, say a red ball. Actually, the material of the ball absorbs all the photons *except* the red-vibrating photons. Those red ones bounce back to your eyeball's retina. There, the cones (red detectors) detect the presence of "red vibration", which sends a nerve impulse to your brain. Then, your brain decodes the rest.
PS - your brain actually receives the image upside-down, and flips it right-side up!!
2007-03-18 14:35:48
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answer #3
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answered by partsbucket 3
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It causes a chemical reaction at the ends of the neurons in our eyes. This sends a neural signal back up the optic nerve and the brain then interprets this signal as 'light'.
Doug
2007-03-18 14:25:25
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answer #4
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answered by doug_donaghue 7
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Light waves are perceived by the 'rods and cones' in our retinas, these signals are then processed via the visual cortex into the visual part of the brain.
2007-03-18 14:24:55
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answer #5
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answered by Skyhawk 5
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info from the left half of your field of vision goes to your right hemisphere, and info from the right half of your visual field goes to your left hemisphere, which usually controls speech. (note, however, that each eye receives sensory info from both the right and left visual fields.) the data received by either hemisphere are quickly transmitted to the other across the corpus callosum (optic nerves switch sides at the optic chiasm). oh and your occipital lobe (back of your head) is where it all goes. so you DO have "eyes in the back of your head" ( the light hits your retina)
2007-03-18 14:32:25
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answer #6
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answered by anonymous 2
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How do we see at all ??
2007-03-18 14:24:26
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answer #7
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answered by You Can't See Me 4
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The eyes of many species perceive different WAVELENGHTS from the SPECTRUM visible to the human eye.
2007-03-18 14:29:46
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answer #8
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answered by Yahoo! 5
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we use our eyes and look at a candle, the sun, or any light
2007-03-18 14:23:24
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answer #9
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answered by Pancake Man 4
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Through a colour spectrum :)
2007-03-18 14:28:07
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answer #10
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answered by ? 3
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