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Re: Re: Re: Have You Ever Thought
| quote: | Originally posted by Boomer187
regardless of pigment, or anything regarding the object, lightwaves are reflected off an object, some are absorbed, some reflected back out. The eye takes these waves and focuses them on your retina. Here your rods and cones are bleached by the light waves, there are three types of cones which give us our color perception, each reacting to diferent colors. Once these are bleached the cone creates an eletrical impulse that is conducted up to combine with other signals in that area. eventually a summed impulse is sent down the optic nerve.
why did I explain this when I know you probably know this? Just the mere fact that objects reflections all end up as an electrical impulse in the optic nerve. everything is reduced to that and is then interpretted by the brain. The brain does have a real active role in vision, infact about 70% - 80% of our visual field comes from old visual information. That means the visual cortex sends a signal back to be reinterpretted. |
Yes, color is the measure of the wavelength of light. Certain wavelengths go through all the stuff you said and are viewed as the corresponding color by most people.
| quote: | So it is very well possible that our perception of a color is in fact different than others however this is not testable. if a person sees 'blue' and calls it blue, and another person has been told that what they see as 'red' is actually blue, they will call it blue and it will in fact become blue. This is untestable because ...well, try to test it  |
Okay. But the wavelength remains the same no matter who is seeing it, and wavelength of light is measurable. And certain wavelengths produce certain colors in the visible spectrum of light.
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I forget what I was getting at, but I think it had to do with where this misperception occurs, you posit it is at the level of the eye, but I say at the level of the brain. yea thats it. |
I look at the definition of eye, and what do I see? "An organ that detects light". What is color to us? Various wavelengths of light. You're saying that the eye detects light, and the brain translates the wavelength of that light into a corresponding color. You're probably right. Either way, my points remain the same.
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Robots, machines, mechanical beings
Automatic and synthetic, we have the means
To take control of this planet and the human race
With our electronic rhythms and the Armageddon Bass
Last edited by Radagast on Dec-24-2005 at 00:19
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