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Five articles on the spirit of scientists in 2020
Scientific spirit essay 1
Newton is a world-famous scientist. Newton loved animals when he was a child. Once, his friend gave him a dog and a cat. Newton was very happy to receive the gift and took good care of his new friend. In order to facilitate dogs and cats to enter and leave the room, Newton dug two holes by the door, one large and one small. Someone asked him why you dug two holes. Newton replied, "Can a dog go through a cat hole?"
Newton's childhood was unfortunate. His father died three months before he was born. At the age of two, my mother remarried to a neighboring village. Newton had to live with his grandmother. He never spends money recklessly. His hobbies are doing small crafts, saving pocket money, buying tools such as saws and hammers, and hiding in the house after school.
Newton was very attentive when he studied. Once I boiled an egg, thinking about the mathematical formula in my heart, I mistakenly threw my watch into the pot as an egg. Another time, I started working on a problem in the morning and forgot to have lunch. When he felt hungry, it was dusk. He walked out of the study, and a breeze made him feel unusually fresh. It suddenly occurred to me: am I not eating? How to walk into the courtyard! So he immediately turned around and went into the study again. When he saw the draft spread out on the table, he forgot to eat, and immediately he was nervously prone on the table to calculate.
Essays on the Spirit of Scientists II
Austrian physicist Wolfgang Pauli was born in 1900 and died in 1958. He is a rare genius at the beginning of this century and has made outstanding contributions to relativity and quantum mechanics. He won the 1945 Nobel Prize in Physics for discovering the "exclusion principle". This principle was discovered by him in 1924, which had a revolutionary influence on the establishment of atomic structure and the understanding of the micro-world.
Pauli wrote a summary paper on the theoretical and experimental results of general relativity at the age of 19. It was only three years before Einstein published his "General Theory of Relativity" (19 16). People thought that he was so young but had such original opinions, which shocked the whole physics circle and made him famous at one fell swoop.
There are many stories about Paulie. He is famous for his preciseness and erudition, and also for his sharpness and criticism. It is said that Pauli met Einstein at an international conference. After Einstein's speech, Pauli stood up and said, "I don't think Einstein is completely stupid."
Once, the Italian physicist segre, who later discovered antiprotons, finished his report and Pauli left the meeting room. Pauli said to him, "I have never heard such a bad report as yours." At that time, segre said nothing. Pauli thought for a moment, then turned to Brescher, a Swiss physical chemist who was traveling with them, and said, "If you give a report, the situation will be even worse. Of course, except for your opening remarks in Zurich last time. "
Another time Paulie wanted to go to a place, but she didn't know how to get there. A colleague told him. Later, this colleague asked him if he had found the place that day. Instead, he sarcastically said, "When you don't talk about physics, you should think clearly."
Paulie is rude to his students, too. Once a student wrote a paper for Paulie to read. Two days later, the student asked Paulie for advice. Paulie returned the paper to him and said, "Even mistakes are not enough."
But Pauli was called "the conscience of physics" by Bohr, because of his sensitivity and prudence, he had the ability to find mistakes at a glance. In physics, there is a "Pauli effect"-when Pauli appears, people there will make mistakes in both theoretical deduction and experimental operation.
And when Pauli says "Oh, there's nothing wrong with it", it usually means very high approval. There is a joke that Paulie went to see God after his death, and God showed him his own design plan for the world. Paulie shrugged after reading it and said, "You could have done better ..."
Essays on the Spirit of Scientists III
Chinese American physicist. Born in Rizhao City, Shandong Province, China,193665438+1October 27th, Michigan, USA, he spent his middle school days in Taiwan Province Province.
Ding Zhaozhong entered the University of Michigan on 1956, received his master's degree on 1960, and received his doctorate on 1962. 1963- 1964 worked in CERN, 1964- 1967 worked in Columbia University. From 1967, Professor of Physics Department of Massachusetts Institute of Technology, and from 1977, he was elected as an academician of American Academy of Sciences.
Ding Zhaozhong is mainly engaged in high-energy experimental physics, elementary particle physics, quantum electrodynamics and the interaction between γ radiation and matter. His most outstanding contribution is that in 1974, he and Li Xite independently discovered the J/ψ particle. For this, both of them won the 1976 Nobel Prize in Physics.
1In the summer of 972, the Ding Zhaozhong experimental team used the proton accelerator of Brookhaven National Laboratory in the United States to find long-lived hitting particles with the mass between1.5×109 ev and 5.5×109 ev. 1974, they discovered a long-lived hitting particle (energy is 3. 1× 109eV) whose mass is about three times that of protons. When publishing this discovery publicly, Ding Zhaozhong named this new particle J, in which "J" is similar to the Chinese character "D", indicating that it was discovered by China people.
At the same time, American Richter discovered this kind of particle and named it ψ particle. Later, people called this particle J/ψ particle. J/ψ particles have peculiar properties, and their life span is 5000 times longer than expected.
This shows that it has a new internal structure, which can't be explained by three kinds of taste quarks known at that time, and it needs to be explained by introducing a fourth kind of quark-charm quark. The discovery of J/ψ particles greatly promoted the development of particle physics.
In addition, Ding Zhaozhong discovered the phenomenon of three jets in the summer of 1979 through the physical experiment of high-energy electron-positron collision, which provided experimental basis for the existence of gluons and quantum chromodynamics.
His experiments on the interference effect of electromagnetic action and weak action at high energy provide experimental basis for the unified theory of weak electricity. Starting from 198 1, he organized and led an international group-L3 group, with nearly 400 physicists from about 13 countries including China.
High-energy physics experiments were carried out on CERN's high-energy electron-positron collider LEP to find new basic particles and new phenomena in particle physics.
Ding Zhaozhong is keen on training high-energy physics talents in China, and often selects young scientists from China to work in the group he leads. He is an honorary professor of China University of Science and Technology and a member of the Academic Committee of Institute of High Energy Physics, Chinese Academy of Sciences.
A few days ago, the 2005 World Physics Year was launched in Europe. He is leading 58/kloc-0 physicists from 43 first-class universities and research institutes in the United States, France, Germany, China and other four countries to explore new substances and antimatter in the universe on the World Energy Electron-Positron Collider built in Geneva.
Essays on the Spirit of Scientists 4
Deng Jiaxian has won the first prize of national natural science, the special prize of scientific progress and the title of national model worker.
Deng Jiaxian and Yang Zhenning are both from Anhui. They study in the same middle school. They played glass ball, squash and climbed trees together since childhood, and formed a deep friendship.
Deng Jiaxian led the basic theoretical research on detonation physics, fluid mechanics, equation of state and neutron transport. , and completed the X theory scheme, participated in the detonation simulation test to guide the nuclear test. After the successful X-ray inspection, Deng Jiaxian organized forces to explore the design principle and selected technical approaches of hydrogen bombs. He led and personally participated in the development and experiment of China's first hydrogen bomb in 1967.
1September, 999 18, on the occasion of the 50th anniversary of the founding of new China, the CPC Central Committee, the State Council and the Central Military Commission solemnly commended 23 scientific and technological experts who had made outstanding contributions to the cause of "two bombs and one satellite" in China, and awarded them the "two bombs and one satellite meritorious medal", for which Deng Jiaxian dedicated his life and gave his life.
"Two bombs and one satellite" originally refers to X missiles and artificial satellites. One of the "two bombs" is the collective name of X hydrogen bomb; The other bomb refers to a missile. A satellite is an artificial earth satellite.
China's "two bombs and one satellite" is a brilliant cause created by the Chinese nation in the second half of the 20th century. 196410 June 16 China's first X bomb exploded successfully,1967 June 17 China's first hydrogen bomb exploded successfully, and1970 China's first artificial satellite was successfully launched on April 24th.
This is the miracle of "two bombs and one satellite" created by the people of China in the process of climbing the peak of modern science. The great cause of "two bombs and one satellite" is an important symbol of the achievements of the new China, the glory and pride of the Chinese nation, and an unprecedented feat for human civilization to climb the peak of science and technology.
Nuclear weapon is a general term for weapons that use the energy released by self-sustaining nuclear fission or fusion reaction to produce explosions and have large-scale killing and destruction effects. The X-H bomb studied by scientists such as Deng Jiaxian is a very powerful nuclear weapon.
Optical radiation, also known as thermal radiation. When a nuclear weapon explodes, it can produce a high temperature of hundreds of millions of degrees Celsius or even billions of degrees Celsius, which can quickly melt everything. As long as light radiation involves human skin, the skin will immediately turn brown or black, and lead to human death.
Shock wave is a kind of mechanical wave, which spreads energy through the vibration of medium. The nature of nuclear explosion shock wave is the same as that of ordinary X shock wave. A nuclear bomb with an equivalent of 6,543.8+0,000 tons of TNT will immediately destroy all buildings within 5.6 kilometers of Fiona Fang when it explodes. The direct impact of shock wave on human body can cause various direct blast injuries.
Early nuclear radiation, also known as penetrating radiation, is Y radiation and neutron flux released ten seconds before a nuclear explosion. It is a unique killing and destructive factor of nuclear weapons. When the human body is affected by nuclear radiation in the early stage, it is prone to shock and central nervous system disorder, leading to organ damage, visceral tissue damage and immune system function degradation.
Instantaneous electromagnetic waves, when nuclear weapons explode, can ionize the air and produce a huge electromagnetic field with a voltage of several hundred kilovolts. Instantaneous electromagnetic waves can destroy the electronic equipment of various weapons and equipment, causing death.
Radioactive pollution refers to the pollution of various objects such as ground, air, personnel and weapons and equipment by radioactive substances produced by nuclear explosion, mainly releasing gamma radiation of particles. These radioactive fission particles are suspended in the air, causing pollution to the ground, people and objects, which can cause hematopoietic dysfunction, cataracts, leukemia and other malignant tumors, decreased fertility or fetal malformation.
Since nuclear weapons are so harmful, why should our country develop? The following is the statement made by our government in the first X explosion: China did not develop nuclear weapons because it believed in the omnipotence of nuclear weapons and wanted to use them.
On the contrary, China develops nuclear weapons for X, for defense, to break the nuclear monopoly and blackmail of nuclear powers, to prevent nuclear war and to eliminate nuclear weapons.
Since then, the China administration has solemnly stated many times that China will not be the first to use nuclear weapons at any time and under any circumstances, and has made many suggestions on how to prevent nuclear war. China's ideas are gradually endorsed and supported by more and more countries and people.
Essays on the Spirit of Scientists 5
Boyle attaches great importance to experimental research. He believes that only experiment and observation are the basis of scientific thinking. He always clarifies his views through rigorous and scientific experiments. In physics, he studied the color of light, the elasticity of vacuum and air, and summarized Boyle's gas law. In chemistry, his research on acid, alkali and indicator, and his discussion on the qualitative test method of salt are quite effective. He was the first chemist to use the juices of various natural plants as indicators. He invented litmus test solution and litmus test paper. He was also the first chemist to give a clear definition of acid and alkali, and divided substances into three categories: acid, alkali and salt. He created many qualitative methods to test salt, such as using copper salt solution to be blue, adding ammonia solution to become dark blue (copper ions and enough ammonia water form copper-ammonia complex ions) to test copper salt; The white precipitate produced by mixing hydrochloric acid and silver nitrate solution is used to test silver salt and hydrochloric acid. Boyle's invention is full of long-term vitality, so that we still often use these oldest methods today. Boyle has also done many experiments in determining the composition and purity of substances, and studying the similarities and differences of substances. A brief review of the history of mineral water experimental research published by 1685 describes a set of methods to identify substances and becomes a pioneer in qualitative analysis.
1670, Boyle suffered a stroke due to fatigue, and his physical condition was good and bad. When he can't do research in the laboratory, he devotes himself to sorting out the knowledge gained from practice and reasoning for many years. As long as he feels a little light, he goes to the laboratory to do his experiments or write papers for fun. 1680, he was elected president of the royal society, but he refused to accept this honor. Although he was born into a noble family, he devoted his life to scientific research and life. He never married and devoted his life to exploring natural science. 169 165438 On February 30th, the scientist who laid the foundation of chemical science in17th century died in London. Engels once gave him the highest evaluation: "Boyle identified chemistry as science."
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