1. Only by effectively inheriting human knowledge and mastering the world's most advanced scientific and technological knowledge can we advance half a step further and become the most advanced level and first-class scientist. Weinberg
The combination of genius and science can produce the greatest effect. Spencer
The achievements of scientists are the property of all mankind, and science is the most selfless field. Gorky
Science is the most important, beautiful and needed thing in people's lives. -Chekhov
Without science and art, there would be no human life. Leo Tolstoy
6. Science itself has great beauty. Scientists engaged in research work are not only technicians but also children. In natural scenery, he seems to be fascinated by fairy tales. Madame Curie
7. Progress is not an event, but a need. Spencer
8. Progress is the law of life, otherwise people can't be called human beings. -Browning
9. Science needs a person's whole life. -Zhu Xian
10. Today, the development of science and technology has become a comprehensive, large-scale and collective undertaking. -Wang
1 1. The accumulation of scientific knowledge is a necessary prerequisite for scientific development. As for who will succeed in the end, it may be accidental and lucky. -Tan Jiazhen
2. Short poems and manuscripts about science and technology. Song of science and technology/what makes hot summer not sultry? What makes the long-frozen ice and snow melt? What makes ordinary life full of magic? Technology is the power of technology. Technology is the magic pen to change the world. This is the only way to succeed without technology. Life is a simple pastoral scenery. With science and technology, the world has become a colorful stage, shining with light. The vast universe is waiting for the endless ocean of explorers, hoping for the exploration of scientists. You see, there are still many invisible truth relativity in this world, which is the guide of our life and has created the miracle of floating cars. You see, technology is so interesting. We must try our best to uncover all the mysteries and look at the building from a distance. Passers-by laugh at Xintiandi, Shenzhen Hi-tech Park, the romantic performance of Peking University and the charm of Tsinghua.
3. Scientific manuscripts We should study science, love science and show science. But how can we do it? Scientists tell us that curiosity is one of the most important aspects of human nature and the main driving force for exploring scientific mysteries; The best way to satisfy this strong desire is to have the courage to ask why, to try and innovate, to overthrow the previous words and conclusions, and finally to get your own results. For example, Galileo, Copernicus and others bravely pointed out the wrong arguments of their predecessors regardless of pressure and opposition from all sides. Through personal practice and experiments, I proved that my point of view was correct and gained my own success.
The average person's understanding of the word "science" may be understood as "the content of truth knowledge that represents reality that human beings have discovered" (concrete scientific knowledge) or "the theory of scientific truth" (scientific theoretical system), or "how to find and distinguish methods called scientific knowledge and scientific theory" (scientific method and scientific spirit), which may also include scientific philosophy. In fact, an eternal problem in the existence and development of science is the contradiction between standards and innovation. On the one hand, the emergence of scientific knowledge will inevitably form relevant standards for judging right and wrong. On the other hand, the process of scientific understanding is a breakthrough process to the original standard, so it is bound to be restricted or suppressed by the original standard.
4. Scientific manuscripts 1. Why do the stars twinkle? We see the stars shining, not because the luminosity of the stars has changed, but because of the occlusion of the atmosphere.
The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent, and its transparency will change according to its density.
So when we look at the stars through it on the ground, we will see that the stars seem to be flashing. 2. Why do people yawn? When we feel tired, a lot of carbon dioxide has been produced in our bodies.
When there is too much carbon dioxide, oxygen must be supplemented to balance the needs of the body. Because these residual carbon dioxide will affect our body's functional activities, then the body will send out a protective reaction, so we yawn.
Yawning is a deep breathing action, which will let us breathe in more oxygen and expel more carbon dioxide than usual, and it can also eliminate fatigue. 3. Why can snakes walk without feet? Snakes have many scales, which are the outermost armor on their bodies.
Scales are not only used to protect the body, but also to be their "feet". When a snake crawls forward, its body will be S-shaped.
Every scale outside the S-shape will tilt upward to help the snake catch the uneven road when it moves forward. These scales cooperate with the muscles of the snake and can push the body forward, so the snake can walk without feet! 4. Why do sunflowers always bloom towards the sun? There is a substance called "auxin" in the stem under the sunflower disk.
This substance has the function of accelerating replication, but it is anti-optical, and it will run to the backlight side whenever it encounters light. So when the sun rises, the stem of the sunflower immediately hides to the side of the backlight, as if the whole plant is bent in the direction of the sun.
5. Why does hair turn white when people are old? There is a substance called melanin in our hair. The more melanin, the darker our hair will be. Without melanin, hair will turn yellow or white.
When human beings reach old age, various functions of the body will gradually decline, and the formation of pigments will be less and less, so the hair will gradually turn white! 6. Why do fireflies glow? Fireflies emit light because there is a luminous body at the end of their abdomen, which is filled with a lot of phosphorus-containing luminescent substances and luminescent enzymes, so that fireflies can emit flashing light. The purpose of fireflies is not only lighting, but also courtship, vigilance and trapping.
This is also a communication tool for them. Different kinds of fireflies emit light in different ways, frequencies and colors, so they can convey different information. 7. Why do you growl when you are hungry? When you are hungry, you will purr. This is because the food you have eaten before has almost been digested. Although the stomach is empty, the gastric juice in the stomach will continue to secrete.
At this time, the contraction of the stomach will gradually expand, and the liquid and gas inside will be stirred up and purr. Don't be embarrassed by your stomach growling next time! Because this is a normal physiological action.
8. Why can't ostriches fly? A giant ostrich, but they can't fly into the sky! This is not because their wings are useless, but because their feathers are too soft and their wings are too small to fly at all. In addition, the ostrich's muscles are underdeveloped and its sternum is flat, which is not conducive to flying.
Ostriches live in Africa. Because they have lived in desert areas for a long time, their bodies gradually evolved into what they are now in order to adapt to the environment. 9. Why can't it go bad easily? Lunch meat, black bean shad, tomato sauce beans.
They are all delicious canned food, which can be preserved for a long time without deterioration.
This is because the can is sealed, so bacteria can't enter. When people make canned food, they pump all the air out of the canned food and then seal it.
In the absence of air, even if the food inside is contaminated with a little bacteria, they can't survive or reproduce! 10. Why does the baby cry all the time when it is born? Babies cry when they are born, not because they are unhappy, but because they are taking the first breath of air! When babies leave their mother's body and are born, the first breath of air will rush to their throats, violently impact the vocal cords, make them vibrate, and then make a sound similar to crying. 1 1. Why do lizards keep bouncing up after their tails are broken? In order to protect themselves, many lizards also protect their eyes and ears; When some lizards are attacked, their tails will be broken due to the severe contraction of their muscles.
Because there are still some nerves alive in the broken tail, it will keep bouncing, thus distracting the enemy and running away. Don't think that their lives will end like this. In fact, it only takes a few months, and their tails will grow back and continue to live.
12. Why is the squirrel's tail so big? Don't look at the relaxed mouse tail! When the squirrel jumps around the tree, its tail plays a great role. It can keep balance when the squirrel jumps to the tree to avoid falling and being injured.
In addition, this big tail can play a more protective role in winter, tightly surrounding the squirrel's body, which is convenient and practical. 13. Why can't a person have one or three thumbs? The average person has five fingers, each with a different length.
However, does anyone realize that besides the thumb, other fingers also have three sections, while the thumb alone has only two sections? It turns out that the number of joints is just the same as the other four fingers. If it is three knots, the thumb will appear weak, so that it can't lift heavy objects; If there is only one section, it can't grasp things freely with the other four fingers! 14. Why don't you scratch yourself? When others scratch ourselves, we feel itchy and laugh nonstop; However, when we scratch ourselves, we not only don't laugh, but also don't itch.
Based on our psychological preparation, the brain will send out a message that there is no danger, and the nerves will relax, so that they will not laugh and itch! 15. Why are most seawater blue and green? Looking at the sea, it is often found that the sea water is blue-green. However, when you pick up the sea water, you can only see it as transparent and colorless as old water.
It turns out that seawater itself is related to our daily life.
5. A new appearance about the content of the science and technology tabloid Shenzhou II:
Although Shenzhou II is the second unmanned spacecraft, it is the first full-scale spacecraft in China, which can also be said to be the "most complete version" of manned spacecraft, and its technical status is basically the same as that when manned. The spaceship returned to the ground after seven days in orbit. Experiments in the fields of space life science, space materials, space astronomy and physics in microgravity environment were carried out on the spacecraft. All kinds of instruments and equipment have stable performance and work normally, and a large amount of data has been obtained. The technical state of the spacecraft is basically the same as that of the manned spacecraft.
Spatial knowledge:
China embarked on the road of reform and opening up in 1978. Reform and opening up have stimulated the vitality of all walks of life and made China's productive forces develop continuously. One by one, new cities have sprung up. Made and developed major scientific and technological achievements. A large-scale project has been completed. Super-large enterprises have developed rapidly. China is tall and strong. It is no longer the poverty and weakness in the 1940s and 1950s, nor the poverty and backwardness in the 1960s and 1970s! The successful launch of the Shenzhou VI spacecraft this morning is another great achievement of China's social development since the reform and opening up!
Space shuttle information:
The space shuttle is a winged, reusable rocket-powered spacecraft. It was launched from the atmosphere by an auxiliary launch vehicle as a means of transportation between the earth and outer space. The space shuttle combines the characteristics of an airplane and a spaceship, like a winged spaceship, and looks like an airplane. The wings of the space shuttle provide air braking when returning to Earth and lift when landing. Like other disposable vehicles, the space shuttle ascends vertically by rocket power. The space shuttle has a low payload ratio because of its wings. After more than 20 years of use, it is found that the cost necessary to ensure the reliability of the space shuttle is too high, which is close to elimination.