This and the following example are among the twenty pictures produced by Henri Matisse for his book Jazz . Also see cutout . Also see serigraphy and silkscreen . Also the measuring of specific gravities with an instrument called a stereometer. See articles on various solid forms , such as those about sphere , cone , cube , and polyhedrons .
Stereoscopic vision increases the ability to sense depth .
Two-dimensional images don't take advantage of this capability, unless they present a different image on which each eye can fix. Several means have been devised to do this. Stereo photographs , sometimes called stereograms or stereographs have been produced since the mid-1800s. Popular since the early 1990s are computer-generated stereograms with images hidden inside of them. Stereographs , the nineteenth century's virtual reality, from the U. of California.