ThePenrosetriangle, also known as the Penrose tribar, the impossible tribar, or the impossible triangle, is a triangular impossible object, an optical illusion consisting of an object which can be depicted in a perspective drawing. It cannot exist as a solid object in ordinary three-dimensional Euclidean space, although its surface can be embedded isometrically (bent but not s… 展开
Description
The tribar/triangle appears to be a solid object, made of three straight beams of square cross-section which meet p… 展开
Depictions
M.C. Escher's lithographWaterfall (1961) depicts a watercourse that flows in a zigzag along the long sides of two elongated Penrose triangles, so that it ends up two stories higher than it began. The resulting waterfall, formin… 展开
The key to the puzzle is the fact that neither of the 13×5 "triangles" is truly a triangle, nor would either truly be 13x5 if it were, because what appears to be the hypotenuse is bent. In other …
2024年11月5日 · “Waterfall” riffs on the impossible triangle. It depicts a cluster of buildings on a hilltop connected by a viaduct. Water spills over a central waterwheel, flowing back over two …