One day after the rain, Bacon went for a walk in the garden and saw many rain beads on the spider web. He found that when he looked at the leaves through the rain beads, the veins of the leaves were enlarged a lot, and even the fine hairs on the leaves could be seen.
He was overjoyed to see this phenomenon. ? Bacon immediately ran home, rummaged through everything and found a glass ball. But through the glass ball, the words on the book are still blurred. He found a diamond and a hammer, cut off a piece of glass, and put the glass close to the book. The text was indeed enlarged. Bacon was ecstatic about the success of the experiment.
Later, he found a piece of wood, dug a round hole, put a glass ball on it, and put a handle on it to make it convenient for people to read and write. After continuous improvement, this kind of lens has become the glasses that people wear now. There are myopia glasses for teenagers, reading glasses for the elderly and glasses for other purposes, which are more convenient for people to study and work.
Benjamin Franklin, an American inventor, first invented myopia glasses.
Benjamin Franklin, an American inventor, suffers from myopia and hyperopia. 1784, he invented myopia and hyperopia glasses.
1825, British astronomer George Avery invented glasses that can correct astigmatism.
Some people think that glasses were invented by China 2000 years ago, and glasses appeared in China in the middle of the Ming Dynasty. In the second volume of "Stay in Youth Day" in the Wanli period of the Ming Dynasty, Heng wrote: "Every time I read an article, my eyes are tired, I don't know the essence of the book, so I can cover my eyes, my spirit is not scattered, and my brushwork is clear. It was tied to the back of the head with silk, and no one knew, so I asked more questions. Yu Yu said, "That's right. "At this time, Babali is the original name.
Turn left | turn right
Extended data
Glasses are lenses embedded in the frame and worn in front of eyes to improve vision, protect eyes or play a decorative role. Mirrors can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia or strabismus.
Glasses consist of lenses and frames. Myopia glasses, hyperopia glasses, presbyopia glasses and astigmatism glasses. There are also special glasses for viewing 3D stereoscopic images or virtual real images. Other types of glasses include goggles, sunglasses, goggles, etc. , provide all kinds of protection for the eyes. Modern glasses usually have a nose pad in the middle of the lens and a cushion where the left arm and right arm rest on the ear. People who love beauty or are not used to wearing glasses can choose to correct their vision with contact lenses. Although contact lenses and laser correction surgery have become more and more popular in recent years, glasses are still the most common tool to correct vision.
References:
Baidu encyclopedia-glasses
43? seven
Comments?
share
report
Anhui rural smiling life?
From Baidu know certification team? 20 18-09-22
It was invented by Amato, an optician living in Pisa, and Spina, an Italian.
Turn left | turn right
1268, roger bacon recorded the optical lens for the first time.
However, at the same time, magnifying glasses with frames for reading appeared in Europe and China.
There has been a debate about whether glasses were introduced from Europe to China or from China to Europe.
In Europe, the earliest glasses appeared in Italy and were introduced by Alessandro di Spina of Florence. The earliest portrait with glasses, Hugh in Provence, was painted by tommaso da Modena in 1352.
Before the Song Dynasty, the prototype of glasses appeared in China.
Benjamin Franklin, an American inventor, suffers from myopia and hyperopia. 1784, he invented myopia and hyperopia glasses.
1825, British astronomer George Avery invented glasses that can correct astigmatism.
Some people think that glasses were invented by China 2000 years ago, and glasses appeared in China in the middle of the Ming Dynasty.
In the second volume of "Stay in Youth Day" in the Wanli period of the Ming Dynasty, Heng wrote: "Every time I read an article, my eyes are tired, I don't know the essence of the book, so I can cover my eyes, my spirit is not scattered, and my brushwork is clear.
It was tied to the back of the head with silk, and no one knew, so I asked more questions. Yu Yue: That's right. "Babali at this time is the original name. ?
Extended data:
Glasses are lenses embedded in the frame and worn in front of eyes to improve vision, protect eyes or play a decorative role. Mirrors can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia or strabismus.
Glasses consist of lenses and frames. Myopia glasses, hyperopia glasses, presbyopia glasses and astigmatism glasses. There are also special glasses for viewing 3D stereoscopic images or virtual real images.
Other types of glasses include goggles, sunglasses, goggles, etc. , provide all kinds of protection for the eyes. Modern glasses usually have a nose pad in the middle of the lens and a cushion where the left arm and right arm rest on the ear. People who love beauty or are not used to wearing glasses can choose to correct their vision with contact lenses. Although contact lenses and laser correction surgery have become more and more popular in recent years, glasses are still the most common tool to correct vision.
China Gusu (Suzhou) is the birthplace of China glasses. Suzhou's glasses production not only has a long history, but also plays a great role in promoting the development of China's glasses industry.
In the early years of Chongzhen in the Ming Dynasty (A.D. 1628), an outstanding technician Sun, also known as Si Bin, was born in Wujiang. He has been studious since he was a child. At that time, it was painful for him to see people with poor eyesight, but it was inconvenient to use a "single lens" mirror or the like. So he carefully developed a kind of lens that can often be placed on glasses.
After repeated experiments, he invented and created a lens grinder-tractor by using mechanical principle. This tractor, the so-called water orange processed by the classical method, uses the pedal to rotate, and uses mineral sand, white mud and brick ash as abrasives or polishing materials to grind the lenses into convex and concave lenses to meet the needs of eye refraction. Finally, it mastered the grinding technology.
Grinding lenses with natural crystal stone. At the same time, he mastered the "aiming light" (optometry) technology, developed lenses with various luminosity such as presbyopia, myopia and hyperopia according to people's age and vision, and compiled an original "aiming at the mirror with eyes" optometry method to check the environment.
In this way, the glasses can fit the eyes, the effect is not bad at all, and it is more convenient and comfortable to wear on the face to meet everyone's vision needs. This is the beginning of independent optometry in China.
The picture frame culture is also reflected in the material, the exquisite appearance, color and decoration of the picture frame, and the implication of the picture and text. In ancient times, the picture frames were often engraved with patterns such as blessing, auspiciousness, longevity and wealth, which reflected the value connotation of "happiness is in sight", "both happiness and longevity", "official prosperity" and "making money in four seasons".
At the same time, the shop name, font size, name and gold content are often engraved on the beam frame. According to different social status and status, emperors and dignitaries used precious materials such as gold, silver, tortoiseshell and ivory, while ordinary people used materials such as copper, iron, steel and wood to make glasses.
The beam shape of glasses has gradually changed from the initial arch bridge shape, door opening shape, door opening shape and arc shape to a straight line, bamboo joint shape, upper and lower beam shape and so on. Liang cards and side cards range from moire, cat's head and tiger's head to eagle's head, two-point and plum blossom.
Modern picture frames are further developed on the basis of ancient picture frame culture, and are more colorful in form, design, decoration, pattern and color, reflecting new values and aesthetics.
From the function of the lens, it can adjust the amount of light entering the eye, increase vision, protect eye safety and treat eye diseases clinically. Children with strabismus and ametropia with headache caused by ametropia can be treated with glasses.
The function of spectacle frame is not only to support glasses worn on people's eyes, but also to beautify and decorate them. Modern pop people emphasize that glasses should be coordinated with people's facial makeup and clothing, reflecting the symbol of high social class, elegant knowledge and fashion.
With the rapid development of social technology, the continuous improvement of people's culture and living standards, and the development of vision care's work, glasses will play an important role in people's lives. Experts say that lens removal is "just needed" for many people, and they will not give up surgery completely because of some remarks. On the contrary, they will spend more energy to investigate and find solutions.
Mr. Sun, 27, plans to go back to Nanjing for surgery after the Chinese New Year, but the news that Cai Ruifang "sealed the knife" is a blow to him. Mr. Sun kept an eye on the development of things until Cai Ruifang came out to explain that "he was misunderstood and didn't continue to do LASIK because he thought LASIK was potentially dangerous or had problems, but because he had other considerations.
LASIK is the safest and most effective myopia surgery at present, which can correct the myopia degree very accurately. Mr. Sun has strengthened his determination to have an operation.