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http://en.wikipedia.org/wiki/Opponent_process

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16y ago

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How can you determine your girlfriends ring size without going to a jeweler or asking her?

If she has very small hands and fingers then buy her a size 5 (jewelers can cut the ring down two sizes if it's too big.) If her hands are fairly large or close to the size of your hand then you can get a size 8 or 9 and have the jeweler cut the ring to fit her. Be sure to keep your bill of sale from the jeweler you purchase the ring from. Another way is to go to the jewelry store and if you see a sales woman there look at her fingers and see if you can find a sales woman with the close to the same size of hands and fingers as your girlfriend.


What you see and how you see?

well we see every thing with are eyes but blind people I don't know


Can an earthquake make one vomit and make one see bright lights?

Probably not.


Why does your mind see optical illusions?

you have to process the picture in you brain to see what it is:)Its actually your brain that causes you to suffer optical illusion. Every image (color, shapes,objects) that your eyes see are processed in your brain before they are reflected back to your vision so it would be brain to eyes as opposed to eyes to brain process.


Why you can not see inside a car from outside when the window glass is of black colour but people inside the car can see out?

The eyes of a person out-side the car have adjusted to the light level out-side. As the glass it dark the inside of the car is darker than it is outside, and is too dark for the person outside to make out any detail. The effect is helped by bright reflections off the glass compared to a dark image as the reflections are brighter than what is in the car, and mask the interior. From inside the car the opposite effect takes place. They eyes of those inside have adjusted to the dark interior of the car, so the light coming in through the windows is plenty bright enough for them to see what is going on outside. Reflections off the glass on the inside are there but in the car is so dark the reflections are darker than the view through the window. The view is brighter than the reflections. Of course if it is dark out side those inside can not see out. Turn the lights on in the car and the situation is reversed, people can see in, but those inside an can not see out.