" The perception of human dignity, Mr. Pinker went on, is no different from how "converging lines in a drawing are a cue for the perception of depth.

WSJ: Leon Kass: The Meaning of the Gosnell Trial

Conceived as a capsule for the imaginary voyage of moviegoing, the theater has a wraparound ceiling and walls made of 1, 136 fabric panels in a sensuous, vibrant Yves Klein blue, altering the viewer's depth perception and encouraging a sensation of being suspended in the space.

ENGADGET: Museum of The Moving Image plans multi-million dollar updates with HD, 3D

Since human depth perception relies on calculating the difference between the angle of view coming to each eye, the result is a 3-D optical illusion.

FORBES: Adventures in the Third Dimension

There are eight "hazcams" front and back, to take stereo black-and-white pictures for depth perception, and four navigation cameras ("navcams") at the top of an extendable mast.

CNN: Curiosity opening Martian frontier?