Aspect ratio

The aspect ratio of a shape is the ratio of its longer dimension to its shorter dimension. It may be applied to two characteristic dimensions of a three-dimensional shape, such as the ratio of the longest and shortest axis, or for symmetrical objects that are described by just two measurements, such as the length and diameter of a rod. The aspect ratio of a torus is the ratio of the major axis "R" to the minor axis "r".

Applications and Uses

The term is most commonly used with reference to:
*graphic / image
**image aspect ratio
**computer display standard
**paper size
**standard photographic print sizes
**standard ad size
**Business card#Dimensions
**Aspect ratio (newspaper)
**pixel aspect ratio
*tire code
*tire sizing
*wing aspect ratio of an aircraft or bird
*Astigmatism of an optical lens


Graphic / Image

; 1.overline|3 = 43: Computer monitors (VGA, XGA, etc), SDTV; 1.414… = √21: Silver ratio, International paper sizes (ISO 216); 1.5 = 32: 35 mm film; 1.618…: Golden ratio; 1.overline|6 = 159 = 53: Widescreen computer monitors (WXGA, etc.); 1.overline|7 = 169: HDTV

ee also

* Ratio
* Equidimensional ratios in 3D

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Look at other dictionaries:

  • aspect ratio — The dimension of a mailpiece expressed as a ratio of length (the direction parallel to the address) divided by height. For example, a postcard 5 1/2 inches long by 3 1/2 inches high has an aspect ratio of 1.57. An aspect ratio between 1.3 and 2.5 …   Glossary of postal terms

  • Aspect ratio — (A[ e]ronautics) The ratio of the long to the short side of an a[ e]roplane, a[ e]rocurve, or wing. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • aspect ratio — n. the ratio between any two dimensions, as width and height: it is used in describing airplane wings, movie film, etc …   English World dictionary

  • Aspect Ratio —   [engl.], Seitenverhältnis …   Universal-Lexikon

  • aspect ratio —  Aspect Ratio  Характеристическое отношение (форматное соотношение)   Соотношение геометрических параметров структуры (формы), например, отношение ее высоты к ширине …   Толковый англо-русский словарь по нанотехнологии. - М.

  • Aspect Ratio — Unter Seitenverhältnis im weiteren Sinne versteht man das Verhältnis von mindestens zwei unterschiedlich langen Seiten eines Polygons. Meistens wird damit das Verhältnis von der Breite eines Rechtecks, eines Bildschirms oder einer Leinwand zu… …   Deutsch Wikipedia

  • aspect ratio —   in general, a term for how the image appears on the screen based on how it was shot; refers to the ratio of width (horizontal or top) to height (vertical or side) of a film frame, image or screen; the most common or standard aspect ratio in… …   Glossary of cinematic terms

  • Aspect Ratio — F/A/V The proportion of picture width to height (1.33:1, 1.66:1, 1.85:1 or 2.35:1). VP Aspect Ratio denotes the shape of your image. Typically there are two traditional ratios; 4 : 3 (TV) and 16 : 9 (Widescreen TV). WikiV The ratio of width to… …   Audio and video glossary

  • aspect ratio — [1] The ratio of length to width of rectangular air grille or duct. [2] The relationship in a tire or wheel between the distance from the rim to the tread and the tire s width (i.e., ratio of section height to section width). Thus, in a… …   Dictionary of automotive terms

  • aspect ratio — a dimensionless ratio expressing how elongated the shape of a flat organ is. In the case of the caudal fin, a high aspect ratio is found in fast swimmers. Calculated as the ratio of height squared to the surface of the fin …   Dictionary of ichthyology

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