Manuel Lima's The Book of Circles explores centuries of circular visual expression, from representations of infinity to maps of the stars. Cover of The Book of Circles: Visualizing Spheres of ...

COURTESY DAVID STEPHENSON. FROM DAVID STEPHENSON, VISIONS OF HEAVEN (NEW YORK: PRINCETON ARCHITECTURAL PRESS, 2005). The Book of Circles: Visualizing Spheres of Knowledgeis a compendium of circular ...

In 1726, Filippo Juvarra put the finishing touches on the dome of the Basilica of Superga, an intricately designed church in Turin, Italy. The artist painted the interior roof of the building with a ...

A circle is a two-dimensional figure that is defined by a set of points that are all the same distance from a given point, known as the center. It is considered a type of line with a collection of ...

A MIND-boggling optical illusion appears to show different colored circles with viewers encouraged to guess what color they all are. The puzzle is a color illusion created by University of Texas ...

The three circles in this photo seem like they are different shades of blue - but they are, in fact, all the same colour. At first glance, the orb on the left looks like it’s a lighter hue of blue ...