Convex and Concave

This article has multiple issues. Please help or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources:  –  ·  ·  · scholar · JSTOR (May 2010) (Learn how and when to remove this template message) This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. (May 2010) (Learn how and when to remove this template message) (Learn how and when to remove this template message)

Convex and Concave
Artist	M. C. Escher
Year	1955
Type	lithograph
Dimensions	27.5 cm × 33.5 cm (10.8 in × 13.2 in)

Convex and Concave is a lithograph print by the Dutch artist M. C. Escher, first printed in March 1955.

It depicts an ornate architectural structure with many stairs, pillars and other shapes. The relative aspects of the objects in the image are distorted in such a way that many of the structure's features can be seen as both convex shapes and concave impressions. This is a very good example of Escher's mastery in creating illusions of "impossible architecture." The windows, roads, stairs and other shapes can be perceived as opening out in seemingly impossible ways and positions. Even the image on the flag is of reversible cubes. One can view these features as concave by viewing the image upside-down.

All additional elements and decoration on the left are consistent with a viewpoint from above, while those on the right with a viewpoint from below: hiding half the image makes it very easy to switch between convex and concave.

Sources[]

• Locher, J.L. (2000). The Magic of M. C. Escher. Harry N. Abrams, Inc. ISBN 0-8109-6720-0.

This printmaking-related article is a stub. You can help Wikipedia by .

• v
• t