Necker cube

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Necker,

Louis, Swiss physicist and mathematician, 1730-1804.
Necker cube - line drawing in which 12 angles of the cube are visible.

Necker cube

Perspective drawing of the outline of a cube that can induce two perceptions, either a three-dimensional cube orientated upward or a three-dimensional cube orientated downward (Fig. N1). See Blivet figure; Rubin's vase; Schroeder's staircase.
Fig. N1 Necker cubeenlarge picture
Fig. N1 Necker cube
References in periodicals archive ?
As it is, the movie toes the humanistic line, rendering the politician as a supremely ambiguous figure.
Cardinal Ercole Gonzaga is an attractive but ambiguous figure in sixteenth-century Italian religious history.
This wonderfully ambiguous figure became a Rorschach test for analysts, who rushed to their squawk boxes with verdicts that were all over the place.
The importance of feminine gentleness in this period is underestimated: Valeria, in The Basset Table, is admittedly an ambiguous figure, but if she were intended to be as attractive as Kreis-Schinck claims, Centlivre would not have given such dramatic prominence to her penchant for dissection (see p.
The clever young man--Enquist writes wonderfully wittily and well about Lewi's sheer intellectual ability--was driven by genuine conviction always, but develops into a deeply ambiguous figure, part gentle father of "The Movement," part ruthless master of Realpolitik.
The issue for Aronoff becomes whether such a morally ambivalent and politically ambiguous figure as Smiley can be appreciated as a hero--or even a human.
An ambiguous figure, Judith has served symbolic purposes for such diverse groups as Protestant partisans during the wars of re ligion, aristocratic women supporters of the Protestant reformation, opponents of the French Revolution, Nazi mythmakers, filmmakers obsessed with gun-toting girls, freedom fighters, partisans in the former Yugoslavia and may others.
Hence, Medb, the great queen of Irish saga, represents the achievements of real women rather than the satirical ambiguous figure every other Celticist takes her to be.
In Miller's scenario, however, Cole is an ambiguous figure. At one point he has absorbed the Claudian rules of eighteenth-century landscape painting, as in his The Garden of Eden (1827).
Posnock should also have considered the ambitious, chameleon-like actress Miriam Rooth in The Tragic Muse, an ambiguous figure who suggests that theatrical powers of self-transformation may be both endlessly enchanting and ultimately empty.
This ambiguous figure does not indicate whether a firm is healthy or failing.
He is an ambiguous figure.' This is much more apparent today than it was in the 1970s, when Steve Rattner was inducted into the profession.