aspect ratio

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aspect ratio

[′a‚spekt ‚rā·shō]
(aerospace engineering)
The ratio of the square of the span of an airfoil to the total airfoil area, or the ratio of its span to its mean chord.
(design engineering)
The ratio of frame width to frame height in television; it is 4:3 in the United States and Britain.
In any rectangular configuration (such as the cross section of a rectangular duct), the ratio of the longer dimension to the shorter.
(mechanical engineering)
In an automotive vehicle, the ratio of the height of a tire to its width. Also known as tire profile.
(nucleonics)
The ratio of the plasma diameter of a toroidal controlled fusion device to the major diameter of the torus.

Aspect ratio

In any rectangular configuration, the ratio between the longer dimension and the shorter dimension.

aspect ratio

1. In any rectangular configuration (such as the cross section of a rectangular duct), the ratio of the longer dimension to the shorter.
2. In a rectangular configuration, the ratio of the long-side to the short-side.

aspect ratio

aspect ratioclick for a larger image
The ratio of span of the wing to its chord. It also may be expressed as the ratio of the square of the span of the wing to its area. Aspect ratio (A) = span2/wing area, span/chord, span × chord/chord2, or wing area/chord2.

aspect ratio

(graphics)
The ratio of width to height of a pixel, image, or display screen. Square pixels (1:1) are considered preferable but displays are usually about 5:4.

aspect ratio

The aspect ratio states the comparison of width to height and is commonly used to describe the shape of a TV or computer screen. For example, the aspect ratio of an earlier standard-definition (SD) screen was 4:3, which is a relatively square rectangle. The 4:3 means "4 to 3," or four units wide to three units high. Today's TVs and monitors typically have a 16:9 ratio, which is a wide rectangle that is still not as wide as most movie theater (cinema) screens.

Another way of expressing the 4:3 and 16:9 ratios is 1.33:1 and 1.78:1; however, these latter designations are used mostly for cinema formats, rather than TV (see illustration below). See letterbox, screen resolution, HDTV display modes and anamorphic DVD.


The 2.39:1 Is Also 2.4:1
The anamorphic scope aspect ratio of 2.39:1 is commonly rounded up to 2.4:1.







The Letterbox Effect
Displaying a wide screen 16:9 image (right) on a standard-definition 4:3 TV (left) creates black bars on the top and bottom. Movies that retain their original, extra-wide cinema formats will create a letterbox even on today's wide screen TVs. (Image courtesy of Intergraph Computer Systems.)
References in periodicals archive ?
18:9 aspect ratios are coming on more phones every day, and it's spreading across budget ranges.
For aspect ratios squarer in shape, the aperture walls are more equal in length, which results in a tug-of-war, and the paste releases in an unpredictable manner.
What LG promises here, however, is a tailored experience that will bring 16:9 videos and content to seamlessly fit the 9:18 aspect ratio.
The results of lateral storey displacement and base shear have been plotted for all the models which are having aspect ratio of 1.
2 pm/s, and in this picking-up speed range, the aspect ratios are all more than 8.
With iResizer you can finally stop worrying about an aspect ratio, and start enjoying the process
Figure 6 shows the calculated aspect ratios using the proposed aspect ratio model and the extracted aspect ratios from the simulation results.
While examining the air change rate ACH with various aspect ratios, it is found that the increase in air change rate was much significant in large aspect ratio, which means narrower streets.
The drastic increase in the strength and stiffness properties is due to the presence of talc particles of very high stiffness, aspect ratio, surface area, surface free energy, and their ability to orient along the melt flow direction during injection molding in the PA6 matrix.
Therefore, the key element to success of BGA/PCB interconnects or BGA escape/routing techniques is to determine the right combination of trace width and space, pad diameter, drill diameter, anti-pad diameter and aspect ratio.
It becomes more evident why the handle aspect ratio is important--if the handle is very "wide" a large blow-up ratio will result.