What is an inch? Diagonal 7 inches - how many in centimeters?

Every person in life has a large number of different screens. Mobile phones, tablets, TVs, monitors, laptops - everywhere there are screens, which, in this case, are measured in inches.

However, for many people this dimension isproblematic, because everyone is used to count distances in centimeters. And what is 1 inch? How to understand what will be the diagonal of the TV for 44 inches? These questions torment many, so it's time to find answers to them. After reading this article, you will no longer think, looking at the diagonal of 7 inches: "How many in centimeters?" - you can calculate everything yourself.

What is an inch?

So, before you, for example, a diagonal of 7 inches. How many in centimeters? It's very easy to answer this question if you know what an inch is. A little later you will learn much more information about why this measure of length arose. Now it is more important simply to answer the basic question.

If you need to translate distance or length frominches in the more familiar centimeters, then you should remember that one inch is equal to 2.54 centimeters. So, for example, you want to purchase a tablet with a diagonal of 7 inches. How many centimeters will there be in the diagonal? Performing a simple mathematical action, you will easily find out that this is 17.78 centimeters.

Origin of the term

Naturally, now everyone wants to know,where did this measure of length come from. There are a lot of different versions, but the most basic and believable is the one according to which an inch was considered to be the width of a thumb of an adult male. This theory is confirmed at least by the fact that from the Dutch language duim is translated as a "thumb".

However, there are different stories about how,As a similar measure of length began to be used in different countries. The inch is 1/36 yard, which, in turn, was recognized as the official measure of length - from the tip of the nose to the thumb of the outstretched hand of King Henry the First. Also there was a legitimate inch, the length of which was equal to the length of three barley grains. In general, there are many options, but most of them are somehow connected with the thumb.

What is measured in inches

Accordingly, the inches were slightly different ineach country, and in some there were several national variations in. To date, the standard adopted the English inch, used in the US. So now, when you see that the screen has a diagonal of 7 inches, "How many in centimeters?" Is not the question that you will ask, since you already know the answer.

All technique is measured in such inches - inIn most cases these are screens, but there may also be, for example, floppy disks. But in other areas also sometimes used inches around the world - for example, when measuring the diagonal of car disks.