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Today we will find out how to easily write one of those ancient symbols we use today in formulas and calculations. We are definitely talking about diameter symbol, which is drawn as Ø or ø.

It's certainly complex, but when you like math or just have a job to do, copying and pasting can be a very long process. For this very reason, for your next research or writing, you may want to know how to write this and other unusual symbols.

We will focus on the use and relevant elements the diameter symbol, but at the same time we will see above other interesting points. At the same time, as one day we will have told you, before delving into the Persian knowledge let's see a little history.

History of diameter symbols (Ø or ø)

This symbol is represented by a perfect circle crossed by a bar.

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Origin and use of the vowel / diphthong

Its origins are somewhat diffuse, although some historians attribute it to the merger of the letter «oe» as an abbreviation. Others believe that he was born in Anglo-Saxon England, where the fusion would be between "o" and "i" and would spread throughout Scandinavia and the Nordic countries.

The symbol for diameter is a letter which is still used today in Nordic languages such as Danish, Faroese and Norwegian, as well as in Africa. As a curiosity, in Denmark a political party is represented by this symbol and it only means the island. Apart from this, some cultures of the old continent maintain old comparisons like the French oe.

It is sometimes called "or with a slash" or "or crossed out," although the symbol actually has its own name. It is pronounced identically to "uh" / "o", but to express it well, you have to practice.

Use of the diameter symbol in other disciplines

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Leaving the realm of letters and humanities, the symbol of diameter is considerably popular. In math and other sciences, it is a symbol used for a wide variety of things. Among them we find:

  • In logic and mathematics, represent the empty set (it's a slightly different symbol, but it's used often).
  • Represents the diameter of a circle. It is even often used to write such a symbol in place of the word "diameter."
  • In German-speaking countries, this symbol can be seen used to represent the mean.
  • Second representation of 0 (identical to the empty set) to differentiate it from O. It is a common use among teachers of subjects related to mathematics and telecommunications.
  • Special symbol used in the score to denote certain specific characteristics of the song.

As you can see, this is a fairly widely used symbol. In spite of everything, the disciplines that normally write them are not very popular.

How to write the symbol for diameter?

To write this symbol, we have three main methods and one of them is difficult to find if you are not from certain countries.

The first of these (and the most difficult) is have a specific keyboard with this key. In Danish and on some German-speaking keyboards you can find this symbol because they use it on a daily basis.

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Danish keyboard with Ø symbol

The second method is use tools where this symbol is offered. As an example, Microsoft Office and similar programs have a section "Insert" where they can insert "Symbols". There you just need to find the diameter symbol and tap on it to write it.

In a hypothetical case where you were writing in an application without this functionality, could you do the opening tour Word, write the symbol and copy and paste it. Despite everything, it is quite bulky, so we would not recommend it.

The last method (and the simplest of all) if you know the combination it is to use the contraction ASCII keyboard. The only detail is that you will need a numeric keypad, In other words, a full-size keyboard with the number pad on the right.

To write the symbol keep Alt and press in sequence 0216 (Ø), 0248 (ø), 157 (Ø) or 155 (ø). At the end of the number sequence release the «Alt» key and the symbol will be written automatically. When in another place you read Alt + number Means you push it in this way.

In case you didn't know, we used the keyboard ASCII who packed many symbols and letters. Regardless, most of them are not available with simple keys.

To enter it we can use the mixed method described above by pressing Alt with different combinations. In the following table you will see most combinations:

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ASCII table

Final words on Ø and ø

Using certain letters and symbols can be overwhelming.

For some people, there are those who only know them ancient sites or languages. In spite of everything, as you can see, there are different languages and very different from Spanish or English that they use these letters normally.

This does not mean that there is disciplines such as mathematics where these symbols are used for certain terms no matter where they come from. The most obvious case is that of the representation of the empty set in philosophy and logic, because it is a universal standard.

We recommend that you read the best keyboards on the market

At the same time we can see its use in more familiar and artistic fields as title names. In the case of some music groups, we can see that some names and songs they use the letter to enhance the style.

As an example: singer-songwriter MONTH, the group Twenty one pilots, but at the same time company names such as RØDE or Brøderbund.

Finally, we hope that you have understood this little tutorial and that it will be useful for your future projects. If you have doubts at your disposal beyond what we teach you here, feel free to ask in the comment box.

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