Popular science article

In our daily study, work and life, we often come into contact with the composition bar, which requires neat and clean handwriting, correct and beautiful writing, clear and standardized fonts and accurate punctuation. Do you know how to write this article correctly? The following is a popular science essay I prepared for you, hoping to help you.

I am familiar with the popular science composition 1 science, not only because I am a member of the school science group, but also because my father is a conscientious science teacher.

When I was a child, I always liked to watch my father prepare lessons and ask questions while watching. My father always took pains to teach me, which also cultivated my spirit of exploration. In the science group, this advantage of mine was "carried forward". When I met some equipment, I made it clear what it was for. This query also led me to find an unknown password.

Once, we were doing an experiment about alcohol lamps. Xu Zheng next to me fiddled with the refill of a ballpoint pen and took out the contents with wire. I took the alcohol lamp on a whim, carefully covered the lid and put the wire with a refill in it. Suddenly, the refill exploded in alcohol. Sometimes it wandered back and forth like a drunk, dyed a large piece, and sometimes it was like a. In a short time, the whole bottle of wine had completely turned purple, like autumn grapes. I was shocked when I saw it. My eyes are as big as walnuts. When I lit the alcohol lamp, I suddenly found that the flame was particularly high, like a bird just released from a cage, soaring into the sky. At this time, I was extremely proud and thought, I am really something. I actually found a way to make the alcohol lamp flame higher. I was ecstatic and told Xu about this discovery. He also expressed surprise and discussed with me why this happened. When I got home, I told my father about this discovery. He told me that alcohol is organic, and so is the refill. Putting the refill in alcohol will dissolve the refill, which is equivalent to putting potassium permanganate in water. After hearing this, I was suddenly enlightened, but there is still a mystery in my heart, that is, what is this purple wine and why it makes the flame bigger. For this question, I opened the encyclopedia and knew it was denatured alcohol, but I still didn't know why it was more angry. I also asked many teachers who can't talk, but I still didn't succeed. This may become an unsolved mystery in my heart!

The center of science lies in exploration. I believe that one day, I will solve this mystery!

Essay on Popular Science 2 While Newton's research on spectrum has been widely recognized by the scientific community and society, Goethe, a great German writer, still insists on the wrong view that "light is pure", regards scientific discovery as fallacy and criticizes it on many occasions. With Goethe's wisdom, I think he made such a mistake not because of arrogance and jealousy, but because he didn't understand Newton's discovery.

Yes, how many misunderstandings and mistakes come from estrangement and ignorance! It seems understandable that writers don't understand science. No one complained why Mr. Lu Xun didn't develop the world's first plane to win glory for China, and no one asked Cao Xueqin to discover the first law of the universe. However, Mr. Lu Xun actually knows a lot about science-don't forget, Mr. Lu Xun's initial major was medicine. How much influence Mr. Wang's experience of studying medicine had on his later creative career can't be verified, but this influence certainly exists. Cao Xueqin is not a scientist either, but what will happen if the scientific knowledge in A Dream of Red Mansions is separated from the related scientific thoughts? Dream of Red Mansions or Dream of Red Mansions? Cao Xueqin or Cao Xueqin?

Writers are like this, and so are people from all walks of life. Everyone is like this.

I always feel that it is not enough for a person to achieve something professionally. He also needs to broaden his horizons and dabble in other disciplines in order to contribute to his professional development. Science is a good object to dabble in, which is very suitable for everyone, especially those who focus on humanities.

We understand science not to be scientists, but to broaden our horizons, increase our knowledge, exercise our thinking and improve our cognitive level, at least for the convenience of life-there is science everywhere in life. As for the improvement of national scientific literacy, people are familiar with it, not to mention it.

But not to mention the students now, that is, as parents and teachers, how many of us are willing to understand science and get close to it? In the eyes of many people, although popular science works also pay attention to literary talent, they are still inferior to elegant and moving pure literature in attracting people and helping people improve their writing level. In fact, this is a misunderstanding. The real popular science works must be both literary and artistic, unforgettable and even unforgettable.

In fact, it is not appropriate to say that people don't want to study science. Can't you see that the development momentum of the Central Science and Education Channel is booming? Don't you know that natural password, Light of Science and Technology and Into Science have become the first choice programs for many people to turn on TV?

It's not that people don't love science, but that they don't have the conditions to love and learn science. Good popular science works are hard to appear in children's schoolbags, which are already filled with colorful popular science pictorial and palm reading. Occasionally, I have the honor to meet one or two teachers who attach importance to reading, most of whom are classics of pure literature. It is difficult for popular science and science to really enter the children's field of vision in a short time.

I have discussed the problem of students' popular science reading with many teachers. It is generally believed that people do not attach importance to popular science reading, so what if they do? Walking into the bookstore, it is difficult to find the popular science counter. If you can find it easily, it will be full of colorful fantasy literature and fantasy literature. There are few real popular science works. Running around the city, it is difficult for you to find works that are really suitable for children to read. The city is still like this, not to mention the countryside.

However, in any case, we can't give up guidance to students because of lack of books. There is not enough choice space, so children may be encouraged to pick up classic works that have nurtured two generations, such as "100,000 Why" and "PHS Roaming in the Future".

It is difficult to find popular science suitable for teenagers, so we should make up for adults' reading first, so as to promote the small and promote the whole. In recent years, the publishing industry has contributed many popular science books to the society. For example, the Keyuan series launched by Shanghai Education Publishing House contains many excellent works, including Yang's Extensive Reading, Gu Mainan's Extraordinary Wisdom Life and The Temple of Heaven. Other excellent foreign scientific and technological works, such as selfish genes, criticality, the future of life and the desire of plants, can also be found in some big bookstores, depending on your patience.

In foreign countries, popular science works are not children's patents. Learning and applying science is the business of the whole society and everyone. I advocate adults, especially parents and teachers, to read more good popular science works and rediscover nature, society and ourselves from the beautiful brushstrokes of scientists. Reading classic popular science works will make your thinking logical, keep your mind passionate and rational, let you often get rid of miscellaneous things, sigh the magic of creation and the magnificence of life, and make you more rational and confident when educating your children.

The reading of "Criticality" made me suddenly enlightened and fell into Leonardo, who was entangled in student discipline. Manodino's Feynman's Rainbow solved the problem of life path choice that has been bothering me. Shi Huaizhe's reverence for life made me understand what is true ethics and what is true goodness. These words full of wisdom, there is no blunt moral preaching, and there is no daunting and difficult theory, only kind words, vivid descriptions and a rigorous and fiery heart.

Just as I can't predict how much these classic popular science works will affect and change me, I can't clearly promise you how much spiritual nourishment our children can get from reading these books. One thing is certain, for anyone, whether adults or children, whether educators or educatees, reading classic popular science works will be an unforgettable magical journey and an indispensable reading experience.

With the rapid development of science and technology, our life is convenient everywhere. Today, let's sort out the convenience brought by technology.

On the computer, there is an indispensable software for otaku and otaku-Taobao. Before contacting Taobao, we went to the supermarket once a week. Parking is very troublesome, and it costs more than 100 yuan to buy something. When we got home, we continued to complain. It's inconvenient to forget to buy this and that. After contacting Taobao, I found that there are all kinds of things on the Internet, and they are very cheap. Some are even half the price of the supermarket. How cost-effective it is to buy things at the store and have them packaged by the store! Haha, technology is changing with each passing day and life is convenient everywhere.

Some people think that computers are too big to carry around. Why not try a new technology-tablet computer? A tablet computer has the same function as a computer. In short, it is a mini version of the computer. Some people also call it a PDA. It combines the advantages of mobile phones and computers, such as the touch screen of mobile phones and the functions of computers ... The best-selling tablet computer is the Apple iPad in the United States. Indeed, technology is changing with each passing day, and life is convenient everywhere!

You don't have to go in person if there is anything. This is the second magic weapon I want to introduce to you-telephone. Every night, I call my grandmother in Jianggan District to greet my health and explain things. Travel abroad, set up a mobile package, and use international roaming, which is very cheap. Isn't that more convenient? Indeed, technology is changing with each passing day, and life is convenient everywhere!

It's midsummer, and you are playing computer at home. Can it not be hot? Next, I will introduce the last high technology-air conditioning, which is also a representative of high technology. It can adjust the indoor temperature and make our room warm in winter and cool in summer. Without it, our life will be like a stove. How difficult it is! Therefore, the invention of air conditioning has also brought us endless convenience.

How happy high-tech life is!

On a Sunday in mid-August, after the continuous drizzle moistened everything, the sun smiled again, birds sang happily, and plants dripped dew, as if praising the drizzle. Chinese rose flowers on both sides of the road, red flowers stand upright on green branches and leaves, and the sun is floating on colorful flowers. On such a beautiful day, my mother and I visited the China Science and Technology Museum.

China Science and Technology Museum is located in Beijing North Third Ring Road. It is made of red bricks and has three floors. There is also a silver circular building next to the China Science and Technology Museum, which is the famous "Variable Screen Cinema".

My mother and I first came to the "experimental field" on the second floor. At this time, the experiment has just begun, only to see the instructor aunt take out an alloy bud and take out a hair dryer to heat the bud, only to see the bud slowly blooming. Turn off the hair dryer. When the temperature drops, the blooming buds gradually close again. The commentator's aunt said that this phenomenon is called two-way memory.

The commentator's aunt picked up a spring made of another alloy material. A fluffy duckling is tied to one end of the spring. She asked a child to hold a fluffy duck, and then heated the spring, which gradually straightened and became a straight wire. When the temperature drops, the spring is still straight and cannot return to its original position. Only by heating again can the spring shrink back to its original position bit by bit. This phenomenon is called one-way memory.

After explanation, I know that this material is very useful, for example, it is often used in hotel fireworks alarm devices. The third experiment is "faraday cage". There is a big iron cage with insulation board, on which people can stand and be isolated from the ground. Aunt commentator invited two uncles into the cage and closed the door. At this time, she pressed the power switch and the cage was charged. She told everyone that the voltage of the cage was 50,000 volts at this time. Wow! People are worried about people in cages, but people in cages are not in danger. They even dare to touch the cage with their hands Dare outsiders touch the cage? The narrator's aunt said she didn't dare to take the risk. She brought a long pole with a piece of wire at the top. She touched the cage with the top of the pole and only saw a blue electric spark and a click. It's really scary Why? The commentator's aunt told us: This is because the people in the cage are standing on the insulation board, and the voltage at any part of them is 50,000 volts. The voltage in the cage is 50,000 volts, and the voltage is zero. People outside are standing on the ground, and the ground voltage is zero. The voltage of the cage is 50 thousand volts, so people outside must never touch the cage. This experiment also told me a truth-children are not easy to move electricity, because their eyes are invisible without electricity.

After watching the experimental performance, I watched Wonderful Water Drops, Submarines, Soap Chips, Photo Wall and Are You or Me, which made me learn a lot of scientific knowledge.

China Science and Technology Museum, you are like a book, let people learn scientific knowledge; You are like a huge picture, showing people today's science. I praise you-China Science and Technology Museum!

About popular science composition 5 Ink is used for writing. However, it is difficult to eliminate ordinary ink after writing, which hinders the recycling of paper. I saw a magic ink in the column "I love inventing" today.

According to Professor Dong Chuan, the inventor of this ink, "The magic of this ink is that it will disappear under the action of light and water after writing. Therefore, we named this ink' Fashion Ink'. " The reporter is a little incredulous and is going to do an experiment to verify Professor Dong's ink.

The reporter prepared three kinds of paper: printing paper, writing paper and newspaper. First of all, the reporter wrote and painted on the printing paper with easy-to-fade ink, ordinary watercolor pen and watercolor pigment, and then sprayed water on it with a flower watering nozzle. In less than a minute, you can clearly see that the words written in fadeable ink have changed obviously and the color has faded a lot, but it will take some time to disappear. Then, the reporter wrote on stationery and newspapers. However, what was written on the stationery did not disappear. Professor Dong explained: "Because the fibers used to make all kinds of paper are different, and the penetration degree of this ink is different from that of all kinds of paper, the fibers and ink of stationery like this have strong penetration, so it takes a long time." Then I read the newspaper, and the result was greatly unexpected. The words in the newspaper disappeared as soon as they touched the water. Looking at the three pieces of paper together, the words written by Professor Dong in ink are almost invisible, but there are still some traces.

To this end, Professor Dong invented another kind of paper. In fact, this kind of paper is nothing special, just covering ordinary paper with a plastic film. Write on it with faded ink. Wipe it with a wet cloth, and there is no trace at all. Wipe it gently and the trace on the cloth will be gone.

Although this kind of ink can improve the utilization rate of waste paper, it will disappear when it touches water. If it is a roll paper for examination, it will be bad. In order to perfect this kind of ink, Professor Dong invented another kind of ink which can be dissolved in boiling water. Later, the reporter started the experiment again.

There are two pots heating on the table. After the water boiled, the reporter put the ordinary printed printing paper in one pot and the paper with ink invented by Professor Dong in another pot. The water temperature rises slowly. When the water temperature reaches 50℃, you can see that the ink characters have disappeared, the water has not changed, and the ordinary printing paper has not changed.

It's amazing! I hope this kind of ink can be widely used in our daily life in the future, which will greatly reduce the waste of paper.

Dust is something that everyone hates, and the harm of dust and bacteria is one of the intolerable phenomena of human beings. Dust is concrete and sometimes abstract. It is ubiquitous, difficult to prevent, and breeds harmful particles ... dust flies everywhere, carrying many bacteria, viruses and eggs, spreading diseases. Industrial dust and fiber dust can make workers suffer from various incurable occupational diseases. Excessive dust will also cause environmental pollution, affect people's normal life and work, and induce human respiratory diseases. ...

From the physical characteristics of dust, dust is a kind of solid impurity with irregular shape, mostly angular and with gray, brown, black and other colors, with water absorption. When there is a lot of dust in the air and the relative humidity reaches a certain level, water vapor forms water droplets, so the dust is easily wetted by water and easily absorbs water.

Looking at its chemical characteristics, the composition of dust is more complicated, and sometimes it provides acid radicals and metal ions that lead to degradation. Some dust itself is acidic or alkaline, such as sulfuric acid smog, photochemical smog, metal oxides and other particles are alkaline. In addition, the floating dust in the dust is acidic or alkaline because of its small particle size, small surface area and strong adsorption capacity. Dust often contains substances such as clay, which will absorb moisture in the air or substances composed of archives, make it undergo hydrolysis reaction and decompose viscous aluminum hydroxide.

Biological characteristics: Because the spores of mold are small and heavy, they are scattered around with the air and inevitably attached to dust, so dust is an ideal culture medium, breeding ground and disseminator for microorganisms. Microorganisms secrete mildew spots containing enzymes and organic acids during their growth. Dust is annoying to everyone, and it is harmful to the environment? Health is harmful to human health. Therefore, throughout the ages, people have always been "diligent, not dusty." However, have you ever thought that human beings can't live without dust? If there is really no dust in nature, what kind of situation will we face?

The diameter of dust particles is generally between one ten thousandth and one millionth of a millimeter. The dust that the human eye can see is a giant in the dust, and the tiny dust can only be seen under a high-power microscope. The main sources of dust are soil and rocks. After weathering, they split into fine particles. These particles float in the air with other organic particles. They absorb some sunlight and reflect it around, just like countless point light sources. The sunlight is greatly weakened by the reflection of dust, so it becomes soft. If there is no dust in the atmosphere, strong sunlight will make people unable to open their eyes.

Interestingly, dust particles also have a "strange temper", which tends to reflect purple, blue and cyan light with shorter wavelengths, and "likes" to absorb other colors with longer wavelengths. The sky we see on the ground is blue because of the high dust content in the lower atmosphere. If there were no dust in the atmosphere, the sky would be white.

Most dust is hygroscopic. Water vapor in the air must adhere to dust to condense into small water droplets. In this way, when the water vapor in the air reaches saturation, the dispersed water vapor will adhere? Dust forms stable water droplets that can float in the air for a long time. If there is no dust in the air, everything on the ground will be wet. What's more, there can be no clouds in the sky, and it is impossible to form rain and snow to adjust the climate, so it is impossible for water evaporated from the ground to return to the ground. If there is less and less water on the earth and it dries up completely, living things can't survive. In addition, due to the refraction of sunlight by these water droplets, there will be colorful natural scenery such as sunset glow, idle clouds and rainbow halo from Zhao Hui. If there were no dust in the air, how monotonous nature would be!

The role of dust tells us that everything has its two sides, even some things that people regard as "waste" often have its existence value that cannot be ignored. Only by correctly understanding them can we seek advantages and avoid disadvantages and benefit mankind.

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