there are different kinds of tereo-3d, the anaglyphic and the one with glasses you hook up with the computer...
heres a image of the anaglyphic kind...
when everything on the right eye is faded in red, you cant see the red objects...that will fool the eye that there are another picture than it really is....
its the same for the left eye only its in blue...
when the brain puts the pics together it does what it does when looking into a real 3d object, it puts the pics together and check the distance between objects from left to right to know the distance from the eye to the objects...
it works almost the same with those glasses you hook into the comp, only those are shaded so you cant see through them....but when using them, the picture flashed from the left eye and the right eyes pictures and only makes it possible to look through one of the sides at once.....
sorry if this was a bad explenation, but if you dont understand, just tell me!
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