Difference Between Inches & Centimeters | Sciencing
cm. Fill the feet, inches or cm to convert the height. This conversion tool helps you Another way to imagine the size of a centimeter is in relation to inches. Review the size of inches, feet, yards, and miles and how to convert between them. Then, try Metric units of length review (mm, cm, m, & km) · Metric units of . Distance Converter, meters, feet, Inch, Yard, mile, nautical mile. The converstion distance will no longer be a nightmare: p Here is a converter.
This dithered printing process could require a region of four to six dots measured across each side in order to faithfully reproduce the color in a single pixel.
The whole blue pixels making up the sphere are reproduced by the printer using different overlaid combinations of cyan, magenta, and black ink, and the light aqua by cyan and yellow with some "white" ink-free print pixels within the actual image pixel.
Unit Conversion: How to Convert Inches to Centimeters and Millimeters to Inches
When viewed at a more normal distance, the primary colored stippled dots appear to merge into a smoother, more richly colored image. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. January Learn how and when to remove this template message In printing, DPI dots per inch refers to the output resolution of a printer or imagesetter, and PPI pixels per inch refers to the input resolution of a photograph or image.
DPI refers to the physical dot density of an image when it is reproduced as a real physical entity, for example printed onto paper. A digitally stored image has no inherent physical dimensions, measured in inches or centimeters.
Some digital file formats record a DPI value, or more commonly a PPI pixels per inch value, which is to be used when printing the image.
How to Convert Centimeters to Inches (with Unit Converter)
This number lets the printer or software know the intended size of the image, or in the case of scanned imagesthe size of the original scanned object. An image may also be resampled to change the number of pixels and therefore the size or resolution of the image, but this is quite different from simply setting a new PPI for the file. For vector imagesthere is no equivalent of resampling an image when it is resized, and there is no PPI in the file because it is resolution independent prints equally well at all sizes.
However, there is still a target printing size. Some image formats, such as Photoshop format, can contain both bitmap and vector data in the same file. Adjusting the PPI in a Photoshop file will change the intended printing size of the bitmap portion of the data and also change the intended printing size of the vector data to match.
This way the vector and bitmap data maintain a consistent size relationship when the target printing size is changed. Text stored as outline fonts in bitmap image formats is handled in the same way.
Other formats, such as PDF, are primarily vector formats which can contain images, potentially at a mixture of resolutions. Reference Pixel Standard pixels are substituted by reference pixels when the target audience uses devices that are viewed from unusual distances or that have screens of unconventional sizes.
For example, the display of most smartphones assumes that the viewers use it at a distance of about 10 inches from the eyes Visual Angle People long noticed the correlation between these values: To relate all of them in an easy-to-understand way, the concepts of visual angle and Pixels Per Degree were introduced.
An example of Pixels Per Degree pixels aligned along the lines E and Fand a visual angle angle A The variable Pixels Per Degree PPD represents the total number of pixels that one wants to appear on the screen per a given distance formed by the viewing angle of one degree. In the illustration, the yellow angle D is one degree it is not actually one degree in this picture because it would be hard to see the diagram with such a small angle, but please imagine that it is.
PPD is the number of pixels that can be lined up along the red line E and also along the red line F. In our case PPD is three pixels two grey and one dark grey. Display manufacturers usually calculate the PPD so that the pixels are small enough to blend in and to produce a continuous image.
It is usually much higher than in our illustration. Apple, for example, claims to keep the PPD for their displays no lower than Knowing the PPD one can calculate the size of one pixel by using the distance from the eye to the display and the visual angle. In our example the distances are 10 and 20 inches — the approximate distances for a smartphone and a computer display respectively.
The visual angle is the angle at which the distance that is covered within this angle on the screen covers one pixel green lines B and C on the illustration. In the illustration the visual angle is marked in orange.
Millimeters to Feet (mm to ft) conversion calculator
Using these tools, we can easily calculate pixel sizes not only for standard displays but also for those that are viewed at unusual distances or are of unusual sizes. If you are interested to know more, you can find more information on the W3C website.
Other Units There are other typography units that are used in the industry, although much less commonly. American pica is one of them. It is about 0. Cicero still appears in literature occasionally. It was a unit commonly used in Continental Europe until pica was introduced. French inches are different from the inches currently in use. One cicero equals 4. It is very similar to the computer pica and equals to about 1.
Em and En While the units outlined above mainly denote the height of each letter, em and en are two typographic units that measure the width of letters. Em equals the size of the character in points, while en is half of an em.
Historically, the size of em was defined as the width of the capital letter M. This is not an accurate definition anymore, because M is different for the numerous fonts that are in use today. Em and en are often used to measure the length of dashes. In English, the dash that is used to indicate range e. Indentation and column width can also be measured in these units. Critique Many designers argue that the currently used typographic systems based on picas and points are far from ideal.
Critique includes problems that arise from having to use this system in conjunction with the metric or the imperial units that designers use for images and page sizes, etc. All three words are written with the same size in points, yet their x-height is very different because different fonts are used for them Another problem is that the letters of the same point size but from different fonts appear to have different sizes.
This is because the size expressed in points corresponds to the body size, not to the size of the body of the letter, which is the x-height on the illustration above. This makes it difficult for the designer to keep consistency through the document. For example, in the illustration, all three words are written with the same size in points, yet their x-height is very different because different fonts are used for them.
Some designers propose to use the x-height as the font size and to stop using the body size to address this issue. This article was written by Kateryna Yuri You may be interested in other converters in the Miscellaneous Converters group: