a necker cube is an example of a(n) optical illusion.
a necker cube is an example of a(n) optical illusion.
a necker cube is an example of a(n)?
an optical illusion
necker cube









































the necker cube is an optical illusion first published as a rhomboid in 1832 by swiss crystallographer louis albert necker. it is a simple wire-frame drawing of a cube with no visual cues as to its orientation, so it can be interpreted to have either the lower-left or the upper-right square as its front side.









































section::::ambiguity.









































the necker cube is an ambiguous drawing.
necker cube
the necker cube is discussed to such extent in robert j. sawyer's 1998 science fiction novel "factoring humanity" that "necker" becomes a verb, meaning to impel one's brain to switch from one perspective or perception to another.









































the necker cube is used to illustrate how vampires in the science fiction novels "blindsight" and "echopraxia" have superior pattern recognition skills. one of the pieces of evidence is that vampires can see both interpretations of the necker cube simultaneously which sets them apart from baseline humanity.









































section::::see also.









































bullet::::- multistable perception









































bullet::::- rhombille tiling









































bullet::::- spinning dancer









































bullet::::- ambigram









































section::::references.









































citations
necker cube