The deeds of modern Chinese scientists who have assiduously studied science and technology

The deeds of Academician Qian Xuesen.

Qian Xuesen's earth-shaking changes in the motherland have arrived. On October 1, 1949, the first five-star red flag fluttered in Tiananmen Square.

Airspace. After 5 days, it is the traditional festival of our nation.

Mid-autumn festival. On this day, Mr. and Mrs. Qian Xuesen and more than a dozen Chinese students celebrated the festival together, and they poured out their feelings while admiring the moon, deeply rejoicing at the rebirth of the motherland, and full of longing for the bright future of the motherland. At this moment, Qian Xuesen had a strong desire in his heart:

Return to the motherland as soon as possible and use your expertise to serve the construction of the country.

Character evaluation:

Qian Xuesen returned to China to serve, dedicated himself to national defense, and aspired to strengthen the country, achieving the great cause of "two bombs and one satellite", China's manned space flight.

Founder. Qian Xuesen has become an aerospace player in the 40s of the 20th century.

One of the most prominent exponents of his field, he became one of the very few superstars of science in many disciplines in the twentieth century.

Qian Xuesen is also an outstanding representative of the older generation of scientists who have made immeasurable contributions to the growth of New China, the most influential and outstanding representative of the most meritorious service, the most representative national builder among the patriotic returnees of New China, and the great people's scientist in the history of New China.

The above content reference: Encyclopedia - Qian Xuesen.

Chen Jingrun studied mathematics diligently.

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".

1. Qian Xuesen (famous scientist and physicist. He is one of the founders of modern mechanics in China. He has made many pioneering contributions in the fields of aerodynamics, aeronautical engineering, jet propulsion, engineering cybernetics, physical mechanics and other technical sciences. ）

2. Qian Sanqiang (nuclear physicist, academician of the Chinese Academy of Sciences, outstanding achievements in "nuclear fission", is an advocate of many interdisciplinary and cross-cutting disciplines. He has made important contributions to the establishment of China's atomic energy science and the research of the "two bombs".

3. Qian Weichang (famous mechanist, applied mathematician, educator and social activist. He is one of the founders of modern mechanics in China. He also specializes in applied mathematics, physics, and Chinese informatics, and has published extensively.

In particular, he has made important achievements in the fields of elastic mechanics, variational principle, perturbation method, etc. ）

4. Hou Debang (famous scientist, outstanding chemical expert, pioneer of China's heavy chemical industry).

5. Yuan Longping (agronomist, hybrid rice breeding expert, founder of hybrid rice research in China, and the first person in the world to successfully use the hybrid advantages of rice. In 1981, he won China's first National Special Invention Award and was internationally known as the "father of hybrid rice". ）

(1) Zhang Heng (78-139): A scientist of the Eastern Han Dynasty, a native of Nanyang, he drew China's first star map and created the armillary sphere and the geodynamic sphere.

2) Zu Chongzhi (429-500): a scientist in the Song and Qi dynasties of the Southern Dynasty, the character Wenyuan, a native of Fan Yang Dao, good at almanacs, for the first time, accurately calculated pi to six decimal places, more than 1,000 years earlier than Europe, made the "Great Ming Calendar", built a guide car, a thousand miles of ship.

3) Ge Hong (284-363): Western Jin Dynasty pharmacist and alchemist. The word Zhichuan, Jurong people; He has made a certain contribution to the development of chemistry and medicine, and "Bao Puzi Inner Chapter" is the earliest existing alchemy work, and "Jinkui Prescription" has the earliest record of smallpox and other diseases in the world.

4) Yixing (683-727): Tang Dynasty monk, astronomer, commonly known as Zhang Sui, Changle people, discovered the phenomenon of star position change for the first time in the world, and also made the "Great Yan Calendar".

5) Shen Kuo (1031-1095): A scientist of the Northern Song Dynasty, a native of Hangzhou, his achievements in astronomy, mathematics, medicine, biology, and physics were extremely outstanding, with 40 kinds of works.

6) Huang Daopo: a female weaver in the early Yuan Dynasty, a native of Songjiang, introduced Li textile tools and improved them, and made a significant contribution to the development of China's ancient textile industry.

7) Guo Shoujing (1231-1316): Yuan Dynasty astronomer, water conservancy and mathematician, the word Ruosi, a native of Xingtai.

9) Xu Guangqi (1562-1633): a scientist of the Shi Dynasty, a native of Wuxi, who translated the "Geometric Original" and wrote the "Complete Book of Agricultural Administration", and was a pioneer in learning science from the West in modern China.

Song Yingxing (1587-?) Scientist at the end of the Ming Dynasty, the word Chang Geng, Feng Xinren, wrote "Heavenly Creation", which is a masterpiece of ancient science and technology in China.

Shen Kuo of the Song Dynasty.

He discovered oil (although it was useless) and wrote "Mengxi Bi Tan", which detailed many ancient Chinese scientific achievements.

Four Great Inventions. Dujiangyan geodynamic instrument.

There are four major inventions in the Science City, and there are "Qi Min Yao Shu" in the Northern and Southern Dynasties, Wang Zhen in the Yuan Dynasty "Agricultural Book", and Xu Guangqi in the Ming Dynasty "The Complete Book of Agricultural Administration". Medicine has "The Yellow Emperor's True Scripture", "Dan Jing", Hua Tuo's invention of Ma Boiling Powder and Five Poultry Plays, and "Compendium of Materia Medica". Astronomy has the Warring States Period's "Gan Shi Xingjing", the Eastern Han Dynasty Zhang Heng, Fan Ming, and the wind and earth motion instrument, and the Tang Dynasty monks invented the zodiacal instrument and advocated measuring the length of the meridian.

mathematically; "Nine Chapters of Arithmetic".

That's all for Li Shizhen's "Compendium of Materia Medica".