3D Animal Wallpapers for Windows 7
This is a group of lovely 3d animal wallpaper, you can download them to your computer desktop.
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3D has a number of properties that distinguish it from spaces of other dimension numbers. For example, at least 3 dimensions are required to tie a knot in a piece of string. Many of the laws of physics, such as the various inverse square laws, depend on dimension three.
The understanding of 3D in humans is thought to be learned during infancy using unconscious inference, and is closely related to hand-eye coordination. The visual ability to perceive the world in three dimensions is called depth perception.