The Freemish crate, also called Escher's cube (Elber) or Hyzer's illusion (Pappas 1989, p. 13), is an impossible figure box
that can be drawn but not built. It appears in Escher's 1958 lithograph Belvedere
(Gardner 1970, Ernst 1987), and was subsequently redrawn/rediscovered by Cochran
(1966) in the form of a crate.
See also Impossible Figure ,
Impossible
Joinery ,
Penrose Triangle
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References Cochran, C. F. Letter to Scientific American 214 , 8, June 1966. Elber, G. "Escher for Real." http://www.cs.technion.ac.il/~gershon/EscherForReal/ . Ernst,
B. Adventures
with Impossible Figures. Escher, M. C. Belvedere. Lithograph, 1958. http://www.mcescher.com/Gallery/recogn-bmp/LW426.jpg . Fineman,
M. The
Nature of Visual Illusion. Gardner,
M. "Of Optical Illusions, from Figures that are Undecidable to Hot Dogs that
Float." Sci. Amer. 222 , 124-127, May 1970. Gardner,
M. The
Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems. Jablan, S. "Are
Impossible Figures Possible?" http://members.tripod.com/~modularity/kulpa.htm . Pappas,
T. The
Joy of Mathematics. Robinson,
J. O. The
Psychology of Visual Illusion. Seckel, A. The
Art of Optical Illusions. Referenced
on Wolfram|Alpha Freemish Crate
Cite this as:
Weisstein, Eric W. "Freemish Crate." From
MathWorld https://mathworld.wolfram.com/FreemishCrate.html
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