How fast does hair grow on your head? Detailed answer

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How fast does hair grow on your head? Detailed answer

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How fast does hair grow on your head?

Every day they lengthen by 0,3 mm, i.e., by about 1 cm per month. Hair grows constantly, from time to time we cut it (cut). Every day we lose 40-60 hairs, but new ones grow every day.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Who Invented Shorthand?

Can you write as fast as you speak? Probably not. But very often it is required to write down the words in the same order as they are pronounced, and in a fast rhythm. One way to solve this problem is to write shorthand.

Shorthand, in short, is a way to write quickly with conventional signs. These signs, which do not exactly look like words, can be deciphered later by a person who is familiar with the notation data system. Transcript assumes the accuracy of writing, tachography - speed, brachygraphy - brevity. It might be assumed that shorthand is a modern invention, but in reality it is already about 2 thousand years old!

In the days of ancient Rome, orators (like Seneca, for example) made big speeches in the senate. They needed to be recorded quickly and accurately. A Roman named Tyro in 63 B.C. e. came up with a system of abbreviations for recording these speeches. The system was so convenient that it was taught in Roman schools, emperors used it: and it lasted for several centuries. The system is based on the use of initial letters in words, abbreviations. This is a kind of abbreviation. Only consonants are used here. They are written in such a way that they occupy three different directions, and depending on this it is already clear which vowel should follow the consonant.

Modern shorthand originated in England during the time of Queen Elizabeth. This system allowed that each sign could have 4 slopes in 4 different directions and the initial position could be written in 12 views. In 1837, Isaac Pitman introduced his shorthand system based on sounds, that is, all words are spelled as they are heard, and not as they are pronounced. There are 26 characters for 24 consonants, as well as dots, dashes, strokes for writing vowels. In 1888, the Englishman Gregg improved the shorthand system, in which form it basically exists today.

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