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Perception and Imaging, 4th Edition by Richard D. Zakia

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Selection

Many an object is not seen, though it falls within our range of visual ray, because it does not come within the range of our intellectual ray, i.e., we are not looking for it. So, in the largest sense, we find only the world we look for.

Henry Thoreau

“Robots” by Emrah Turudu.

Ganzfeld

Imagine for a moment a visual world in which there are no visual elements. You are able to see but your visual field is completely homogeneous. The situation described rarely exists in our normal visual world, but you can imagine, for example, being in a very dense fog, looking into a large integrating sphere, or flying an airplane through a dense ...

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