Penrose triangle
Oscar Reutersvärd; independently Lionel & Roger Penrose
Three convincing corners. One impossible connection.
Impossible objects / 2018 model
Impossible wooden cube
A real wooden construction looks like an impossible cube from one view.
TRY THIS
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
THE IMAGE IN THIS ARCHIVE
Wmccallie
Original file & attribution · CC BY-SA 4.0
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Download imageFrequently asked questions
What is Impossible wooden cube?
A real wooden construction looks like an impossible cube from one view.
What should I look for in Impossible wooden cube?
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
What explains Impossible wooden cube?
This is a photograph of a physical model. Its chosen viewpoint makes the wood seem to join into a cube with contradictory overlaps; the apparent object differs from the actual construction.
Another way to see it
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Impossible cube
M. C. Escher; modern redraw by 4C and Belbury
A familiar cube frame acquires an impossible set of overlaps.
