The TV diagonal is measured in inches. Therefore, it is important before purchasing a particular TV model to present the screen sizes in centimeters familiar to us. It is also necessary to know at what distance from the display with one size or another it is customary to view. The level of comfort in the process of contemplating films, series and programs will depend on this. In addition, the article will disclose useful information about the aspect ratio of the display, say how to convert inches to centimeters, and present a finished table with all the calculations.
TV sizes depending on the diagonal
Without a doubt, the dimensions of the TV directly depend on the diagonal. After all, the larger the diagonal of the screen, the he himself, respectively, and more. And the larger the display, the larger the TV. Everything here is very, very simple. However, before the size of the TV did not match the screen. Because the display was significantly smaller than himself. So, the speakers and various interfaces (and in older models, when there were no remotes, also controls), were located on the front surface, exactly where the screen was. That is why it was simply impossible to calculate the dimensions of the TV based on the diagonal.
Currently, progress has reached such proportions that the screen is practically a television. The only exception is the thickness of the case (usually no more than a few centimeters) and a frame of 1-2 cm around the perimeter of the display. Thus, based on the size of the matrix, it is very simple to imagine the dimensions of the device.
Reference! In Soviet times, when the country was engaged in the production of this kind of technology, the diagonal was reflected in centimeters. Now, development, creation and production is concentrated abroad, where the system of measures is different from our part of the world. That is why the measurement of screen sizes is carried out in inches.
How to convert inches to centimeters
Converting inches to centimeters is very simple and straightforward. An inch is a unit of measure. To find out the dimensions of the TV display, just know its diagonal in inches. Then it will be possible to easily convert inches to centimeters, knowing how many centimeters is equal to one inch.
It is known that an inch is 2.54 cm. This means that the standard 32-inch TV in terms of current dimensions has a size of 81.28 cm. In the same way, you can easily find out the size of any display. You only need to multiply inches by the value of 2.54.
It should also be noted that you need to choose the right distance to the TV. The larger the matrix, the farther the viewer should be from the TV. And, accordingly, the smaller it is, the closer you need to be located to the TV. Otherwise, enjoy a comfortable viewing will not work. If the screen turns out to be too large when viewed from a certain distance, then it will be impossible to see everything that is displayed on the screen, and if it is small, you will have to peer into the picture. This is very harmful to vision - in this case it is subjected to excessive stress.
It is generally accepted that the distance to the TV should be 3 or 4 diagonals of its screen. In other words, if the screen size is 32 inches (81 cm), then the distance should be 2.4 - 3.2 meters. Moreover, the larger the display, the more diagonals there may be. That is, in order to comfortably view on small screens, you should consider an acceptable size in the amount of three diagonals or a little more. While on huge displays over 50 inches, this figure can exceed more than four screen sizes.
Aspect ratio, diagonal and resolution
Much more important is the relationship between the aspect ratio of the display, its diagonal and resolution. Here you should go ahead and say that now TVs are available with displays, the aspect ratio of which is 16: 9, while the diagonal can be absolutely any. Resolution can also be different 1366 × 768 pixels (HD Ready), 1920 × 1080 pixels (Full HD) and 3840 × 2160 (Ultra HD). In other words, with a different diagonal, the resolution can also be different, only the aspect ratio of the screen will remain the same.
However, not so long ago it was still possible to meet a PC monitor, where the aspect ratio of the matrix was 4: 3, and the diagonal could be either 17 or 19 inches. And the resolution was either 1024 × 768, or 1280 × 1024 pixels.
Important! The transition to an aspect ratio of 16: 9 was made for a reason. The fact is that monitors with a ratio of 4: 3 were almost square. And the human eye, as you know, reads more information in width rather than in height. Widescreen 16: 9 matrices made it possible to perceive more information, and it became much more convenient to do it: during viewing, vision practically does not notice anything except the television image itself.
Thus, the relationship between the aspect ratio of the matrix, the resolution of the captured image and the diagonal was once more clearly expressed. But at the current moment of time, only the aspect ratio (namely 16: 9) is constant, while the screen size and resolution can be any. For manufacturers, the connection between the screen resolution and its area does not exist: they can produce any matrix. But it is advisable for the average user to read the warning below.
When choosing a TV, you must remember that the higher the resolution, the more clear the image on the screen will look. However, this is observed provided that the video sequence being reproduced corresponds to the resolution of the TV screen. Another nuance: with the same resolution of two TVs, for example, Full HD, the picture on that one with a smaller screen diagonal will seem more clear and detailed. Thus - a huge display should have the maximum resolution in Ultra HD to transmit the sharpest picture.
How to measure the diagonal of the TV
When choosing a TV by most users, the screen measurement is incorrect. They believe that its size is its distance in width, from one edge to the other. This is far from the case. After all, a diagonal in a rectangle is a line drawn from the lower edge of one side to the upper edge of the other side. Example: the distance from the lower left corner of the display to the upper right. Moreover, the measurement is carried out only by the matrix itself, without taking into account the scope of the TV. There is still such a nuance: TV manufacturers, especially for Chinese companies, leave a black edge in some of their models in a matrix that does not reproduce images. However, they do not cover this dark area with a frame. Thus, the screen before turning on the TV may seem much larger than it actually is.
Another nuance lies in determining the size of the display in curved TVs. With its measurement, difficulties will arise only when using roulette. An ordinary tape centimeter will help out here, which is manually twisted, like a coil of some tape. It is elastic, so it won’t damage the screen.
It is much more difficult to determine the distance for comfortable viewing on a modern curved TV. The point here is this: if you take a regular TV and one whose matrix is curved, it turns out that the curved TV model will be somewhat narrower, despite the same display size. Here the usual calculation of the distance in the 3-4 diagonal will not be relevant. And you will need to determine the distance for a comfortable viewing, based on the width of the screen. You just need to measure the width of the curved model in the store, and then compare the measurements with the width of a conventional TV. This is easy to do, as data on the diameter of the display for conventional models are already known.
|Screen in inches||Screen Width in Centimeters|
Knowing the width of the display depending on its dimension, you can easily compare this data with the width of a curved TV. Information on the width, diagonal and the required distance at which ordinary TVs should be located (to be presented below) is known. Therefore, it is not difficult to determine this same distance in models with a curved screen.
TV diagonal table in cm and inches
In order not to need to translate the inches into centimeters in the mind, a special table was compiled, which can be used to instantly receive information. Along the way, this table includes information on the distance at which the TV should be located relative to the viewer. In the process of choosing a TV, it is not very convenient to make any calculations. Yes, this is not necessary, all information is available in a simple and understandable table:
|Inches||Centimeters||Distance for viewing (in meters)|
|22||56||1,70 - 2,40|
|32||81||2,40 - 3,40|
|37||94||2,80 - 3,90|
|40||102||3,00 - 4,20|
|42||107||3,20 - 4,50|
|46||117||3,50 - 4,90|
|50||127||3,80 - 5,30|
|55||140||4,20 - 5,80|
|60||152||4,60 - 6,30|
|65||165||4,90 - 6,80|
|75||190||5,70 - 7,90|
Many drew attention to the spread in the distance from several tens of centimeters to a couple of meters, depending on the size of the displays. Of course, for each person a comfortable distance is purely individual. But it is worth considering that the larger the display, the farther away you need to be located.