Do you know the rationale behind these 10 common things in our lives?

Do you know the rationale behind these 10 common things in our lives?

We have to come into contact with many things in our lives. Many times we take the things we see for granted and never seriously think about the reasons behind them. In any case, the existence of a thing has its own truth, and it finally evolves after a long period of testing. It is the precipitation and symbol of wisdom.

Let's take a look at these things that we usually ignore but are full of ingenuity.

1. Why are the letters on the keyboard not arranged in alphabetical order?

Some people think that the reason why the keyboard is designed to look like we really exist is because this sort of alphabetical arrangement can help you quickly tap the most frequently used letters. But this is only part of the reason the keyboard is so designed. In fact, on the original typewriter, the letters were arranged in alphabetical order. However, arranging the letter keys in this way makes it almost impossible to enter quickly, because old typewriters are easy to jam, which is why letters that are often used in conjunction with each other are arranged far apart.

There is a more important reason-habit. But after the familiar QWERTY keyboard appeared, although it is far from perfect, everyone is familiar with this layout, so no one wants to change it anymore.

2. Why is there a patch on the sleeve of some clothes?

This popular trend first appeared in the military. Soldiers often have to crawl with their elbows, so the cloth in that area is particularly easy to wear. This is why some military uniforms have extra patches on the elbows to increase the wear resistance of that part.

Subsequently, some hunters began to use this method in their uniforms to help them shoot while increasing the service life of the clothes. Later, some college students borrowed this design and made it a fashion.

3. Why is ice cream sold in a waffle cup?

At the end of the 19th century, ice cream was actually sold in small glasses. These ice cream quilts will be recycled, rinsed with water at most, and sold to the next customer. But around 1904, a completely new solution appeared. Because of the hot weather at that time, many people went to buy ice cream, but people who sold ice cream did not have so many cups. At that time, a shop selling waffles was Moncoroque.

The clever waffle clerk at the time quickly made his waffles into cups and sold them to vendors selling ice cream. As a result, everyone is happy, especially some doctors find that the glass will increase the infection of some diseases.

4. The small hole behind the phone

Do you know what is the purpose of the black hole between the flash and the lens behind the iPhone? This small hole is used to eliminate microphone noise. It is placed in that position to filter out background noise outside the speaker. This design makes the sound quality of the phone clear even in a noisy environment.

5. Why do sports shoes have a rubber head?

Sports shoes were originally worn by basketball players. The rubber covering on the head was used to protect basketball players from accidental injuries to their toes. Now that part usually uses very hard rubber. In addition, this part was usually black in the past, but gradually evolved into white because of its beauty.

6. The cylinder on the charging cable

Have you ever wondered why there is a strange cylinder on the power cord of some computers? This little thing is a very important thing to ensure that the laptop or desktop computer works normally. It can filter the high frequency part of the current. In other words, it keeps your computer away from electromagnetic noise. This kind of ferrite magnetic column can be used to eliminate the interference of the noise in the power supply to various precision electronic devices such as telephones, computers, televisions, etc.

7. The raised dots on the bottom of the wine bottle

These small dots on the bottom of the bottle are not as beautiful as you think. The thing is actually very simple. These small points are used to encode product numbers and mark incorrect packaging during the production process.

8. Why is there a circle of hair on the hat of the down jacket?

The loop of hair on the hat is a very obvious feature of the northern indigenous clothes. Their coats are usually very warm, but their faces are still exposed to the cold, so in order to protect their faces from frostbite, they sewed a long hairy edge to their hats. This simple technique can make Their faces remain warm. This design has been retained to this day.

9. The border next to the notebook

The blank space beside the notebook was not originally used to write notes for people. The real situation is that previous books were often gnawed by mice. In order to prevent mice from gnawing away important content in the book, people began to deliberately leave blanks on the border of the book. Later it gradually evolved into what it is now.

10. Why are there several rubber bands on the headphone plug?

You may have noticed this a long time ago, there will be 2-3 rubber bands on the plug of the headset. This is not for decorative purposes. Their real use is that they are wired to two earphones from each circle. If there is no such circle, then you can only hear the sound of one earphone.