Can science and technology really make the economy more developed and people's living standards more affluent? This is a very serious question, and you can't answer it easily. The following is what I arranged for you to read!

Essays on scientific and technological knowledge

When it comes to technology, you will feel very inscrutable, as if it exists only in scientists' laboratories and in all kinds of cutting-edge products. In fact, technology is around us, and our food, clothing, housing and transportation are inseparable from technology. For example: the life of our low-headed people-mobile phones, transportation and so on.

On Wednesday morning, the class teacher announced good news to us-the exhibition hall of China Science and Technology Museum came to Frontier High School. When we heard the news, we cheered. We will go to the exhibition hall soon. Although it was cloudy, the students' hearts were like the sun.

Along the way, the students talked and laughed, and neat instruments and enthusiastic staff were displayed in front of the exhibition hall. The arrival of the students makes the quiet science and technology museum lively, and I am no exception when the students walk towards their favorite instruments. My eyes were attracted by something called "sonorous gongs and drums". I started reading the instructions. Turning the handle, I saw the gears inside turning rapidly, mixed with melodious gongs and drums. Just then, I thought the older staff came up to me and asked, "classmate, do you know the principle inside?" I thought for a moment and said, "Power should drive gears, gears drive drums, and drums beat gongs and drums." The staff patiently said, "Yes, that's right. In our technical terms, it is through several transmission mechanisms, such as gears, chains, belts, connecting rods and so on. So that the power of the rocking wheel can be transmitted to the gongs and drums, and the power generated by it can shake the gongs and drums. "

I left the "sonorous, loud gongs and drums" and began to look for my goal again. My eyes were once again attracted by the room of a "scientific knowledge performance hall". I saw a sea of people inside, so lively! I immediately went up to him and saw a group of people around a staff member, a table and some instruments. Workers skillfully operate the instrument and patiently explain the principle. A robot named "Xiaoyou" immediately attracted everyone's attention. It dances, sings and chats with audience friends. Can also perform a variety of difficult movements, such as: golden rooster independence, Thomas rotation and so on. Many people have given "Xiaoyou" thirty-two praises. The staff said to us: "In a few decades, the robot will be able to wait on you like a nanny ..."

It has been an hour since we came to the exhibition hall unconsciously, and we have returned to school. When I got to the classroom, many students were resting on the table. Although they were tired when they came back, they were still very happy. After all, they learned a lot of scientific knowledge. Thanks for this science and technology exhibition! Thanks to the school leaders for giving us the opportunity! Thanks to the silent dedication of the staff behind the science and technology exhibition! Because of your efforts, this science and technology exhibition is today! Because you let us know so much scientific knowledge! Science and technology grow with me, so that we can have a better and brighter tomorrow!

The second part of the essay on scientific and technological knowledge

Knowledge can make people smart; Laughter can make people cheerful; Books can enrich people's extracurricular knowledge; Exercise can make people healthier. I think scientific knowledge is also very important. It can make us smarter.

Science can help us understand many problems that can't be explained clearly in other courses such as Chinese and mathematics. Scientifically, we know that under the microscope, onion skin can see things invisible to the naked eye; Understand that the biological chain cannot be destroyed; Understand how harmful garbage is to the earth. These are all Chinese, and those courses can't be explained clearly

In ancient times, people thought that solar and lunar eclipses were caused by the tengu eating the sun. But it's not like this. I know from science class that the reason of solar eclipse is that when the sun, the moon and the earth rotate in the same straight line, the light from the sun on the earth will be blocked by turning to the middle moon, so the solar eclipse occurs. At that time, I knew that the so-called "Tiangou Food Day" was not true, just a legend.

Scientific knowledge is very important because it makes us smarter.

Scientific and technological knowledge essay 3

1. The New Era of Science and Technology is the Chinese version of American popular science, and the original English version was founded in 1872. It is the largest magazine of applied scientific knowledge and modern life information in Europe, America and even the world. In the process of improving the technology and living standard of the western public, the new era of science and technology is an important medium with the longest history and the most far-reaching influence. The authoritative position of 129 has always been intact, and it still ranks among the top three best-selling publications in the world mainly targeting male readers. The Chinese version of "New Era of Science and Technology" is exclusively authorized by the American Times Mirror Group, and the original texts of the pictures and texts are simultaneously provided to the popular science newspaper of China Association for Science and Technology and Beijing New Era Runcheng Technology Consulting Co., Ltd., Beijing 1996, 1, and distributed nationwide. More than 80% of our pictures and texts are directly imported from the original English material and reported simultaneously. The Chinese version of New Era of Science and Technology is a window for readers to understand the new trends and trends of international science and technology. For a long time, the development of science and technology has had a great and far-reaching impact on China's economic development and people's life. Since its publication, this magazine has been devoted to promoting the rapid development of science and technology in China. We will try our best to provide readers in China with the latest scientific and technological information and materials to help them broaden their horizons and increase their understanding of the latest scientific and technological knowledge.

2. Tetramycin is a brand-new systemic agricultural antibiotic, a high-tech product with independent intellectual property rights independently developed by Liaoning Institute of Microbiology, and a national scientific research achievement. This product has a broad bactericidal spectrum, and has a strong killing effect on three pathogenic fungi, namely ascomycetes, basidiomycetes and semi-fungi, and two pathogenic bacteria, namely Gram-negative bacteria and Gram-positive bacteria. It is suitable for controlling various fungal and bacterial diseases of various crops, especially for fruit tree rot, defoliation, gummosis, wheat sheath blight, powdery mildew, rust, Fusarium wilt, angular leaf spot and anthracnose.

3. A new satellite navigation receiver developed by School of Electronic Science and Engineering, National University of Defense Technology, recently appeared in the 4th China Satellite Navigation Academic Annual Conference held in Wuhan. This navigation receiver can receive three signal systems at the same time: Beidou in China, gps in the United States and glonass in Russia. The positioning accuracy is within 10 meter, and it can be widely used in aircraft, ships, automobiles and other platforms.

The device is highly integrated, light in size, equivalent to the size of an ID card, very convenient to use, and superior in navigation and positioning efficiency, even surpassing the gps receiver in some fields. According to experts, it creatively integrates Beidou, gps and glonass on a circuit board, which increases the selectivity in different environments. Its Beidou signal receiving function is independently developed, which has the characteristics of high precision, anti-deception and anti-interference, which can effectively ensure the accuracy and safety of navigation and positioning, and make China get rid of dependence on foreign satellite navigation systems.

The innovation team of satellite navigation technology in this school is the only unit in China that undertakes the research and development tasks of system core system, satellite key load, operation control subject, test device and application terminal. /kloc-in the past 0/0 years, the team has successfully developed key ground equipment and hand-held user telephones, and has overcome many technical problems such as high-precision index and anti-interference ability of the system, which has made important contributions to the opening of Beidou-2 satellite navigation system in the Asia-Pacific region.

4. A Japanese research team found that a protein is related to the production of excessive interleukin. If we can prevent this protein from acting, it is expected to inhibit the imbalance of interleukin, and then treat rheumatoid arthritis caused by this cytokine abnormality more effectively.

Rheumatoid arthritis (RA) is a chronic inflammation in which autoimmune diseases cause the immune system to attack joints. Interleukin is considered as an important inflammatory cytokine, and its excessive production is closely related to the pathogenesis of rheumatoid arthritis.

In animal experiments, the research team found that if protein in some mice can't work, even if new substances are added to promote the production of interleukin, the production of interleukin is less than that of control mice. The research team raised mice with multiple sclerosis, and after treatment to prevent them from moving, various symptoms such as sensory disturbance and motor paralysis were suppressed. Tadashi Kishimoto, a professor at Osaka University, said that this discovery is expected to promote the development of simple and cheap drugs for rheumatoid arthritis.

After the Asian ladybug moved to Europe, a large number of European ladybugs died. It turns out that local ladybugs will soon fall under the "biological weapon" of Asian ladybugs after stealing their eggs or larvae.

Giessen University in Germany issued a press release on June 16, saying that its researchers found that the body memory of Asian ladybugs is a parasite called microsporidia, which obviously does not endanger Asian ladybugs, but can produce a fatal blow to European ladybugs. Asian ladybug has been introduced into biological control in some European and American countries because of its delicious aphid nature. However, ladybugs also have the habit of stealing eggs and larvae of the same kind. If European ladybugs eat eggs or larvae of Asian ladybugs, they may be killed by microsporidia. The research results were published in the latest issue of Science.

In addition, researchers at Giessen University found a variety of defense molecules against pathogens in Asian ladybugs and tried to develop new drugs. For example, protein extracted from Asian ladybug can effectively fight the pathogens of tuberculosis and malaria.

Researchers have previously found that Asian ladybugs contain a large number of "antibacterial peptides". However, the extent to which these antimicrobial peptides and proteins make Asian ladybug resistant to microsporidia needs further study.