Inventions that contribute to our country s science and technology

The Four Great Inventions of Ancient China :

Papermaking, compass, gunpowder, printing.

In 1200 BC, China used silk to weave silk.

In 770 B.C., China was already able to cast iron.

In 722 B.C., China began to use Ganzhi to mark the day.

In 700 BC, Guan Zhong (725-645 BC) recorded magnets.

In 611 BC, China had the earliest record of a comet, which was later known as Halley's Comet.

In the 5th century BCE, the Chinese Zhou Rites recorded a method of making fire from the sun with a metal concave mirror.

In 400 BC, Mo Zhai (468-376 BC) discovered the imaging of small holes.

In 350 BC, Gander and Shi Shen compiled the world's earliest star catalog during the Warring States Period in China.

In 250 BC, in the book "Han Feizi" in the last years of the Warring States period of China, "Sinan" was used to identify the north and south.

In the 2nd century BC, Liu An (179-122 BC) wrote Huainanzi, which recorded the use of ice as a lens and a reflector as a periscope.

In the 2nd century BC, the Western Han Dynasty of China used silk and hemp fiber paper.

In the 1st century, China's Book of Han recorded tip discharge.

In 132, during the Eastern Han Dynasty of China, Zhang Heng invented the world's first measuring instrument geodynamic instrument.

At the beginning of the 3rd century, Hua Tuo in the late Han Dynasty of China invented the anesthetic Ma Boiling Powder for surgical operations.

In the 3rd century, Liu Hui of the Wei and Jin dynasties in China proposed the circumcision technique, and the pi rate was .

In the 7th century, stereotyping was already used in the Tang Dynasty of China.

In 725, Nangong Shuo and others in China measured the length of the meridian.

In the 9th century, alchemists of the Tang Dynasty in China invented gunpowder.

In 1041, Bi Sheng of the Northern Song Dynasty of China invented movable type printing, 400 years earlier than the West, laying the foundation of modern printing.

In 1054, the Chinese History of the Song Dynasty recorded a supernova explosion, which was the world's earliest written record of a supernova explosion. The remains of this supernova formed the crab-shaped nebula as we see it today.

In 1231, the Chinese Song Dynasty invented the "earth-shaking thunder", which was filled with gunpowder and could be shot with a thrower, which was the prototype of artillery.

In 1259, when the Southern Song Dynasty of China fought against the Jin soldiers, a firearm that fired bullets from bamboo barrels was used, which was the prototype of the musket.

In the mid-to-early 14th century, the abacus began to be used in China.

In 1385, China established an observatory in Nanjing, which was the world's first well-equipped observatory.

In 1637, Song Yingxing of the Ming Dynasty of China completed the "Heavenly Creation", summarizing China's industrial and agricultural production technology.

Printing and papermaking, without paper, civilization could not continue to be inherited, and with printing, books could be printed in large quantities.

Gunpowder - the basis of military **.

The compass - the guarantee of ancient voyages.

Many of them have a history of 5,000 thousand years and a population of more than 100 million.

Nothing can come out.

One of the four great inventions, gunpowder!

There are new inventions in every industry. For example, in the electronics industry, 3D color TVs, holographic images, and flexible screens for mobile phones.

Mechanical development is also constantly innovating, bullet trains, high-speed rail, light rail, and subways are constantly breaking through the lighter and faster.

In recent years, there have been no inventions, they have all been developed on the basis of the original.

It is generally believed that bai, high-tech is a kind of talent secret

set, knowledge dense set, technology dao

Cutting-edge science and technology that is intensive, capital-intensive, risk-intensive, information-intensive, industry-intensive, competitive and permeable, and has a significant impact on the development and progress of human society.

High-tech inventions are inventions and innovations based on these high-precision cutting-edge science and technology, and inventions and creations that will have a significant impact on mankind.

The popular understanding is that high-tech must be industrialized in order to form industrial economies of scale! And high-tech knows no borders! It is necessary for the global high-tech industry to jointly respond to the common destiny of mankind!

The "high" of high technology is relative to conventional technology and traditional technology, so it is not an immutable concept, but has a historical, developmental, and dynamic nature. Today's high technology will become tomorrow's conventional technology and traditional technology. Some estimate that only 1% of the technology and knowledge that people use today will be 50% in 60-60 years, and 99% will be obsolete.

From the perspective of the development of high technology in various countries in the world, high technology is not a single technology, but a new technology group at the forefront of science, technology, and engineering. The various components of this group influence each other, complement each other, and promote each other. At the same time, because high technology is linked with high-tech industries, it is also a production system that integrates science, technology, and production, and is vigorously promoted by the market.

In addition, high-tech is also different from the so-called "accumulation of experience" in the sense of general technology. It is not an accumulation of experience, but a technology based on scientific discoveries or creations.

1. Qian Xuesen, at the beginning of 1956, Qian Xuesen put forward the "Opinion on the Establishment of China's National Defense Aviation Industry" to the Communist Party of China. At the same time, Qian Xuesen established China's first rocket and missile research institute, the Fifth Research Institute of the Ministry of National Defense, and served as its first president.

He presided over the completion of the "establishment of jet and rocket technology" plan, participated in the development of short-range missiles, medium- and short-range missiles, and China's first artificial earth satellite, directly led the "two-bomb combination" test of using medium- and short-range missiles to deliver atomic bombs, participated in the formulation of the "two-bomb combination" test of China's short-range missiles to deliver atomic bombs, and participated in the formulation of China's first interstellar aviation development plan.

2. Due to the strict confidentiality system, Huang Xuhua has not been able to reveal what he actually does to his relatives and friends for a long time, and because the research and development workers are too nervous to work on stockings, from 1958 to 1986, he has not returned to his hometown Haifeng to visit his parents.

In 1988, in the South China Sea diving test, Huang Xuhua visited his mother by the way, the 95-year-old mother and son looked at each other but were speechless and choked, and met again after 30 years, 62-year-old Huang Xuhua also dyed his temples with gray hair.

3. Hua Luogeng is the founder and pioneer of Chinese analytic number theory, matrix geometry, canonical groups, automorphic function theory and multivariate complex function theory, and is listed as one of the 88 great mathematicians in the world today in the Chicago Museum of Science and Technology.

The mathematical research achievements named after Fahrenheit in the world include "Fahrenheit's theorem", "Fahrenheit's inequality", "Fahrenheit method" and so on. He is known as the "Father of Modern Chinese Mathematics", "God of Chinese Mathematics" and "People's Mathematician".

4. Li Siguang is a geologist and educator. The founder of Chinese geomechanics, one of the main leaders and founders of China's modern earth science and geological work, the first batch of outstanding scientists after the founding of New China and the founding fathers who made outstanding contributions to the development of New China, was elected as one of the 100 Chinese characters who moved since the founding of New China in 2009. His representative works are "Foundations and Methods of Geomechanics" and "Introduction to Geomechanics".

5. Yuan Longping is an expert in hybrid rice breeding in China, a pioneer in the research and development of hybrid rice in China, and is known as the "father of hybrid rice in the world". In 2000, he won the highest national science and technology award. His representative works include "Yuan Longping", "Two-line Hybrid Rice Research" and "Hybrid Rice Breeding and Cultivation".

This statement is correct. In the process of invention, inventors have made great contributions to inventions, and they have promoted the development of human society through creative thinking and innovative technology. An inventor usually refers to the subject of invention and creation, a person who proposes and solves an invention problem, and their contribution package includes proposing new ideas, designing new solutions, implementing new technologies, etc.

However, sometimes inventors are not the only contributors, there are others involved and contributing, such as funders, experimenters, testers, etc. These individuals may have made a significant contribution to a particular aspect or aspect of the invention, such as providing funding, equipment, or test data. Therefore, while acknowledging the contribution of the inventor, the contribution of others should also be noted.

In conclusion, the inventor is one of the people who has made a great contribution to the invention of the manuscript state, but he is not the only contributor. When evaluating inventions, the contributions of all participants should be taken into account.

It is a person who has made a creative contribution to the invention patent