Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Who made the first glasses? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

Who made the first glasses?

Today, many politicians and other famous people wear glasses. It would be interesting to know how the course of history would change if the statesmen of the past wore glasses (if, of course, they needed them). Perhaps emperors and kings would behave differently if they could better see the world around them.

Nobody knows the person who invented the first pair of glasses. In 1266, Roger Bacon enlarged the letters in the book by applying a magnifying glass to them. But who first guessed to wear lenses near the eyes? A portrait from 1352 shows Cardinal Hugon wearing spectacles, which consisted of two framed lenses and two temples fastened together and placed near the eyes.

So someone invented glasses sometime between 1266 and 1352.

When the first printed books appeared, glasses became a necessity. Most of the craftsmen then worked in Northern Italy and Southern Germany, so in the XNUMXth century glasses were made mainly in these areas.

In 1629, the English King Charles I approved the charter of the Guild of Spectacle Makers. And in 1784, Benjamin Franklin invented double focus glasses.

Today, glasses not only help people read and see well, but are also used for other purposes. We know that sunglasses protect your eyes from bright light and sunlight. Colored lenses are used for camouflage. Night aviators and photographers wear red lenses, and for skiers, pilots, polar explorers and mountaineers they produce glasses that absorb ultraviolet and infrared rays. Workers in open-hearth shops wear goggles that block out infrared rays. Glassblowers also wear glasses that allow them to see better. We can endlessly enumerate professions where it is necessary to use special glasses.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

Why did one pilot land the plane twice right next to New York bars?

In 1956, Thomas Fitzpatrick got drunk in a New York bar and bet he could get here from New Jersey in 15 minutes. He went to New Jersey, hijacked a small plane from a flight school, and, without lights or radio, landed neatly in front of a bar. Fitzpatrick got off lightly - he was stripped of his pilot's license and fined only $100 because the owner of the plane did not press charges. This did not stop him from repeating the same thing two years later, when in another establishment the bartender refused to believe in the veracity of the story. To prove it, Fitzpatrick hijacked another plane from the same school and again successfully landed it in New York, but this time the court gave him six months in prison.

 Test your knowledge! Did you know...

▪ Why do we stop growing?

▪ How many eyes does a tarantula have?

▪ How is the German attack on the USSR connected with the excavations of the tomb of Tamerlane?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Brain chip to restore vision 19.02.2017

Scientists at Harvard University have developed a chip that can restore the ability to see.

The innovative chip is implanted directly into the brain and stimulates the visual cortex. It allows you to simulate vision without using the optic nerve and the optical system of the eye. Implant data is received from video cameras in real time. They are converted into electrical impulses that are processed by the brain.

Previously, scientists have experimented with implanting chips inside the brain. However, the electrodes quickly overgrown with tissues and ceased to interact with the brain in the right way.

In a new experiment, scientists decided to implant implants into the surface of the brain. So they will keep working longer. Experiments will be carried out on primates. The chip will be implanted inside the brain of one group, the chip will be installed on the surface of the other, and then the results will be compared.

Scientists do not yet intend to achieve a complete restoration of vision. For example, primates implanted with chips must use computer vision to learn how to navigate the terrain. The installation will allow you to perceive light, shadows and geometric shapes. It is still too early to talk about full vision.

Other interesting news:

▪ New unique type of magnet

▪ translator for the blind

▪ digital refrigerator

▪ A new type of tectonic activity has been discovered on Venus

▪ Wooden floor that generates electricity from steps

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Indicators, sensors, detectors. Article selection

▪ article Training and advanced training of engineering and technical workers to comply with regulatory requirements for labor safety. Basics of safe life

▪ Astronomy article. Big encyclopedia for children and adults

▪ article Repairman of mechanical assembly works. Standard instruction on labor protection

▪ article Time counter of telephone conversations. Encyclopedia of radio electronics and electrical engineering

▪ article Active TV signal divider - from passive. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024