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 ?
Yes, if I'm doing it, it's again much as we discussed that Necker's cube.
If we were going through our Necker's cube and all those profiles, we would probably have to stop at a certain point if we had a Black Nationalist orientation or a Black Aesthetic position.