Interesting facts about glasses

For some, glasses are a means of vision correction; others wear them as a fashion accessory. Sometimes they were used by workers of certain professions in ancient times, and this is proved by some curious historical facts.

What interesting can you say about glasses?

Such a seemingly simple accessory has a fairly rich history, which is associated with many historical persons.

When did the glasses invent?

The first inventors are Arabs. The tool was elemental and completely different from what we used to see it. The Arab scientist Ibn al-Khaysam described the structure of the eye and its ability to see better with a spherical piece of glass or a translucent stone.

But in the version in which we are accustomed to see them, the first, according to the Pisans, the monk Alessandro della Spina invented in the 13-14 centuries . The Florentines, in turn, argue that the first was the monk Salvino d'Armato in the same time period. Initially, they were intended for people with farsightedness.

For myopic, glasses were invented already in the 16th century. Historians compare this event with the invention of printing and literacy. The ruling circles first dressed the expensive accessory: kings, electors, popes. In the seventeenth century they were brought to Russia: they were used by Patriarch Nikon and Tsars Mikhail Fedorovich and Alexei Mikhailovich.

It is noteworthy that at first they were fastened with an elastic band, and in the 18th century, Edward Scarlett invented the temples that we still use today.

Unusual uses of glasses

1. In the 19th century, Swiss scientists patented glasses against seasickness. Between two glasses a liquid is poured, which creates the appearance of a horizon. This illusion regulates the functioning of the vestibular apparatus .
2. Today, among drivers and drivers, the introduction of specialized glasses has begun. A sensor is mounted in the frame that monitors the employee's blinking. As soon as the deceleration is detected, a sound signal is automatically given.
3. In Europe and the USA, special educational glasses are used that mimic alcohol intoxication . They put on physical education lessons and the student must perform simple exercises for coordination. Such an invention makes students think about the consequences of drinking alcohol.
4. Some poultry farms in Denmark use glasses for roosters . According to farmers, in this way the visual acuity of animals decreases and they fight less.

Glasses in Psychology

A person who uses glasses as a means of correcting vision visually looks smarter and causes more confidence.

Due to the fact that glasses can hide emotions and thoughts in ancient China, they were mandatory for judges.

Sunglasses

The inventors of sunglasses are the Eskimos - residents of the Far North. Thin holes cut through a wooden plate. This device was designed to protect against the glare of the snow.

The first batch on an industrial scale was commissioned by Napoleon in the 18th century. The emperor included them in the mandatory equipment of the army for the Egyptian expedition. More than 200 thousand units were produced. Soldiers who refused to wear them later became ill with cataracts .

But this is not the only case of using the accessory by the military. The practice of night actions by Chinese soldiers occurs during the day. For a sense of reality, soldiers are given sunglasses . At the same time, management can track all errors during the execution of actions.

But in America, they are included in the equipment of the police and military . The accessory is made of impact resistant materials, and also give credibility to the appearance. In addition, the accessory helps hide the emotions of employees.

Today, many residents of sunny countries use them not only to protect from the sun, but also to prevent the early appearance of wrinkles .

Curious about glasses

In 2004, Errold Jessaran, an employee of the Dutch company Jess Optiek, invented the world's largest glasses. Their width is about 2 m, and the diameter of each lens is 68 cm. For a long time, glasses were sold at auctions, but it is still unknown whether a buyer was found.

Switzerland also decided to stand out. They released a model called Jewel Sunglasses. She is recognized as the most expensive. Its price is 408 thousand dollars.

For eye health

So that glasses do not become a means for correcting vision, but only a fashion accessory, you need to regularly check your vision, as well as properly care for.

Blueberries and blackberries have a beneficial effect on vision. Thanks to these berries, visual acuity can be maintained. However, only tasty berries are not enough. Scientists have proven that indigo color has a beneficial effect . It is recommended that you look at this color at least 15 minutes a day. Regular intake of vitamin C reduces the risk of developing various eye diseases, such as cataracts.

The existence of the accessory is proved by the fact that people have always been concerned about vision, which tends to deteriorate. Modern fashion allows you not to experience embarrassment or discomfort, moreover, this accessory sometimes becomes an integral part of the image.