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 ?
Called by Benjamin "furnished man" (der moblierte Mensch), the creature who demonstrates a primitive form of those new ways of taking in and seeing images is the hero of Max Ernst's art, the ambiguous figure of the "pipe man" (rohrender Mensch) named in the punning, self-referential caption of Ambiguous Figures--a creature who, outfitted with a laboratory safety mask, inked-on seaweed nose, bulbous Pyrex genitals, and a torso complete with handles to be grasped and cranked, supplants the image of the "touching man" (ruhrender Mensch) and his surefire effects of empathy.
Such parallels support the view that Corrothers's use of the name Sandy Jenkins is more than coincidental, and, taken with his more general ambivalence toward dialect and his concerns about stereotypes, suggest that the poet Sandy stands in relation to Corrothers, as, years before, the conjure man Sandy had stood to Frederick Douglass, as an essentially negative or, at best, ambiguous figure.
Heenan said that they found that people who either walked or jogged on a treadmill for 10 minutes perceived these ambiguous figures as facing towards them (the observer) less often than those who simply stood on the treadmill.
Clarke is a painter of soft landscapes, ambiguous figures, country barns and abstract forms.
Ambiguous benefits: The effect of bilingualism on reversing ambiguous figures.
34) With such a strong preference for British migrants, Mike and Stefani were more ambiguous figures, and part of the initial purpose of the documentary film was to "assist our local assimilation campaign.
Leininger-Miller discusses Prophet's "images of androgynous and racially ambiguous figures, shedding light on Prophet's protest, even as she depicted black subjects, that she was 'not a negro.
Surviving the Nuremberg Trials and 20 years in Spandau, he become a media celebrity in the years that preceded his death and remains one of the most enigmatic and ambiguous figures of the twentieth century.
And yet, even though the poem's confusions are never resolved, we, as readers, are satisfied: after all, the roots of most family trees are seeded with unanswered questions, ambiguous figures, and half-truths.
Tony Robbin started out as a painter, creating complex works filled with interwoven patterns and ambiguous figures to create the illusion of seeing more than one object in the same place at the same time.
Rather than bank buildings or public spaces, it is '60s modular futurism--here indistinguishable from bourgeois modernism--that these ambiguous figures occupy.
of Massachusetts, Boston) explores how Japanese writers depicted the ambiguous figures of modernity in order to express the fast, opaque, and fragmentary condition of Japan as a modern nation-state.