It’s an illusion. An Escherian ruse. Ulrich Schwanitz says, “Pfft.” Now, normally, when people say they’ve designed a 3-D Penrose triangle, all they’re really saying is that it looks ...

The optical illusion of the impossible triangle in Perth, Australia. Seen from the right angle, this sculpture looks like a Penrose triangle. Credit: Bjørn Christian Tørrissen / Wikimedia Commons ...

Penrose (who at the time was unfamiliar with the work of Reutersvärd, Piranesi and other previous discoverers of the impossible triangle) drew the illusion in its now most familiar form (left ...

The perpetually flowing waterfall is based on another classic optical illusion called an impossible triangle, or the Penrose triangle. What makes this impossible? The water falls from the top ...

That structure is known as a “Penrose Triangle,” a “3D illusion offering an escape from rigidity within straight lines,” that often plays tricks on the eyes of those staring straight at it.

The result? A sculpture in the real world of one of the most famous impossible objects, a Penrose Triangle. Obviously, it's an illusion: the Penrose Triangle monument only looks like the ...

A user on Thingiverse designed and printed the Penrose Triangle, a famous optical illusion that isn't supposed to be buildable in reality. Shortly thereafter, another user figured out how to print ...

But unlike the Penrose triangle, this one is actually possible, as long as you look at it from the correct angle. As the paper states: “Nick Scott-Samuel (in whose office the illusion was ...

Hegedűs was studying at the Hungarian University of Fine Arts in Budapest when he started playing around with letterforms based on the Penrose triangle, an Escher-esqe "impossible object" that ...

Unity, an impossible triangle created by Hamaekers in ... Hamaekers used a different physical method to achieve the illusion. Unlike most 3-D Penrose triangles, the sculptures by French artist ...