Reflections on Reading Children's Encyclopedia

Savor a famous book carefully, I believe there will be a lot of feelings in my heart, and I need to write a review and make a good record. Want to know how to write your thoughts after reading? The following is a collection of my thoughts on reading children's encyclopedia for your reference only. Welcome to reading.

Reading Children's Encyclopedia 1 Last winter vacation, my uncle gave me a set of "China Children's Encyclopedia" and encouraged me to study hard, learn more nutrition from the book and increase my knowledge. There are four books in this set, including Earth Home, Human Life, Cultural Life and Science and Technology. I read it with relish at once.

What impressed me the most was page 104 of the science and technology book, which talked about the earliest calculation method in mathematics. According to legend, the ancient people counted with their fingers, but there were only ten fingers, so they invented the decimal system. Later, they used stones to represent the number of objects, and natural numbers naturally came into being. After reading this book, I also learned a lot of knowledge that I didn't know before: for example, numbers in mathematics evolved from Arabic numerals, and Mount Everest in China is the highest mountain in the world, with an altitude of 8884. 43 meters, gravity in physics was discovered by Newton from the casual phenomenon of an apple falling to the ground, and Archimedes once said a brave sentence in the book: "Give me a fulcrum and a hard stick long enough, and I can shake the earth." This sentence deeply attracted me, and I really want to know the truth of science. By reading books, I know that Nobel is a great inventor. He used the prize money he invented to set up the Nobel Foundation to reward those who made outstanding contributions to scientific progress.

I will study hard scientific and cultural knowledge in the future, and actively explore and find that I really want to win the Nobel Prize, contribute to science and win glory for my motherland. In the days when I accompanied the China Children's Encyclopedia, I broadened my horizons and increased my wisdom. It is like a lamp, which helps me to light the road ahead when I am darkest. It is like a cup of sweet water, which moistens my heart when I am most thirsty. It is like a teacher, giving me directions when I am confused. I can't put this book down, and I often dream about it in my dreams. Just like my good friend, when I walk into it, it walks into me.

Thoughts on Reading Children's Encyclopedia 2 Recently, I read China Youth Encyclopedia, got to know many elites of the Academy of Sciences, learned the history of scientific development in China, and gained a lot of scientific knowledge and technology, thus knowing that our high-tech life is hard-won.

I met many elites in Keyuan. In ancient times, there were scientists Ptolemy, Bacon, Copernicus, Newton, Zu Chongzhi and Darwin, while in modern times, there are scientists Hua and Li.

Understand the history of scientific development in China. 1500 years ago, Zu Chongzhi determined that pi was between 3 14 15926 and 314/5926; 1800 years ago, Zhang Heng made a seismograph that can measure earthquakes, which is the first instrument to test earthquakes in the world. Around 1570, Li Shizhen spent 30 years writing Compendium of Materia Medica; Qian Sanqiang proved that the kernel is divided into three at the end of 1946.

Got a lot of scientific knowledge and technology. I see: The sun is a huge celestial system, which mainly includes the sun and planets, satellites, asteroids, comets and meteors orbiting the sun. A celestial body that can shine by itself like the sun is called a star. A celestial body, such as the earth, does not shine by itself, and revolves around a star, which is called a planet. A celestial body, such as the moon itself, does not give off light and orbits the planet. It is called a satellite. The nine planets in the solar system are Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mercury and Pluto in the order of diameter. Planets revolve around the sun in the same direction, and at the same time rotate in their respective orbits. Because the distance between them and the sun is different, so is period of revolution. For example, Mercury is closest to the sun and has the shortest orbit. It only takes more than 80 days to make a revolution, while Pluto takes more than 200 years to make a revolution. There are thousands of asteroids around the sun in their respective orbits. These asteroids are mainly distributed between Mars and Jupiter. They are mainly composed of rocks and metal blocks, some of which are only a few kilometers in diameter.

There is also an alien planet orbiting the sun. They drag their long tails and look like brooms. They are called comets. Comets have long and flat orbits, so they are rarely seen on earth. For example, Comet Halley only visits the Earth once every 76 years, and the last observation was in 1986.

Many facts in the history of science tell us that people's knowledge and understanding of science is constantly improving and developing, and so is the process of human exploration of the universe.

With the development of science and technology, we can not only study the earth, but also the universe. We can use satellites, spaceships and space shuttles to enter the universe, get close to distant planets and explore mysteries.

After reading children's encyclopedia, I feel bored in winter vacation, so I want to find a book to read. When I saw the China Children's Encyclopedia, I picked it up and tasted it carefully.

After reading this book, I realized that what I have learned is only a little bit in the sea of books, and there is still a lot to learn! I can't help admiring this book!

This book tells me a lot of mysteries I don't know: The medical masterpiece Compendium of Materia Medica contains 9 kinds of drugs, 09 kinds of botanical drugs, others are minerals and other drugs, and new drugs have been added, with 09 drug maps and 09 sets of prescriptions. Nearly a thousand poems were written by Li himself, and he felt relaxed. I also know that Shaq's Travels is mainly based on diaries.

This knowledge made me suddenly realize that infinite mysteries are waiting for us to explore and study. Only those who love learning and keep improving will get it.

I make up my mind that from now on, I will study hard, learn the basics well, study my lessons diligently, and make full preparations for exploring and studying more knowledge in the future. Let's go!

Reflections on Reading Children's Encyclopedia 4 During the summer vacation, I read a book called Children's Encyclopedia.

In this book, I can find answers to many questions. After I got this book, it was like Liu Bei got Zhuge Liang, like a duck to water, and the castle peak was like a cloud.

During the summer vacation, my father took me to travel to Dalian. I returned to Yantai, Shandong Province by boat from Dalian, and took the largest and most luxurious passenger ship in Asia-Bohai Cuizhu. When I woke up in the morning, the ship had not landed yet. I quickly climbed to the top of the boat to see the sea in the morning. I saw dozens of seagulls at the stern, following the ground for a while. I don't understand why they are chasing the spaceship. I didn't know until I read the children's encyclopedia. In fact, seagulls are very clever. They chase ships in order to save energy. The updraft generated by the ship can support the seagull's body. Seagulls can fly close to seagulls without flapping their wings. Moreover, when sailing, seagulls will stir up waves at the stern and knock over the fish in the ocean. Seagulls are just hunting. With such a good thing, seagulls will definitely follow the ship.

The content of this book is very rich, including scientific and technological inventions, animal world, plant kingdom, cosmic starry sky, world ball games, military aerospace, sports, allusions to scenic spots, mysterious world and so on. It is a very good extracurricular reading for primary school students. There are many creatures, animals, planets and so on that I don't know, and it also makes me understand the past.

This book is divided into two volumes. Although I haven't read all of them, I am particularly interested in this set of books, and I will read them carefully. Find answers to all kinds of questions that I didn't know before.

After reading "Children's Encyclopedia", I met Montgomery Brothers, China aviation pioneer Feng Ru, Wright Brothers and airship manufacturer West Berlin. I also know all kinds of knowledge about space flight! For example: why the plane can go to heaven, the principle of helicopter, the use of black box and so on!

Legend has it that at the end of 14, a China native, known as "ten thousand households", thought of using rockets as power to conduct flight tests. He installed 47 of the largest rockets at that time on the back of the chair, tied him to the chair, took a big kite in each hand, and then lit the rockets at the same time. Wan Hu's brave attempt failed, but he was the first person in the world to use the power of a rocket to make a flight test.

This essay reflects the courage and innovative spirit of China people. And learned that we had a "first" in flying, although this "first" failed. When I finished reading the short chapter' Why can an airplane go to heaven', I knew that the airplane had to accelerate a certain distance on the runway before taking off. The power generated by the engine overcomes the air resistance (and the friction with the ground when taking off) and pushes (pulls) the plane forward. Air flows over the surface of the wing. Due to the different shapes of the wing, the air flow on the upper surface is long, fast and low pressure. The airflow on the lower surface is short, slow and high pressure. In this way, when the pressure difference between the upper and lower pressure exceeds the' weight (gravity)' of the aircraft, the aircraft can leave the ground and fly into the air.

As we all know, helicopters generate lift by rotating propellers. When the lift is equal to the helicopter's gravity, the helicopter can hover in the air. By changing the angle of the propeller, the lift can not only counteract gravity, but also produce a component force, which makes the helicopter fly forward, backward, sideways and turn 360 degrees. This is the principle of helicopter. After reading this book, I learned a lot about aerospace. I must read more articles about aerospace, learn knowledge and make contributions!

Thinking about Reading Children's Encyclopedia 6 Recently, I was addicted to a book called Children's Encyclopedia, which introduced a lot of scientific knowledge. After reading it, I couldn't put it down and touched it very much.

The book is roughly divided into ten parts: space, earth, environment and ecology, biology, world continent, culture, history and politics, science, technology and human body. Astronomical geography, human history, chemical physics, almost everything. This book is vivid and easy to understand.

I am most interested in the introduction of science and technology in the book, and the most impressive content is Life under the Lens. The book introduces the development process, working principle and application of cameras and video cameras in life. Nowadays, cameras are almost everywhere, and even mobile phones have photography functions. Camera is a very useful image capture tool, which can be widely used in security systems, space exploration, medical equipment and many other fields. Originally, I thought cameras were only available in recent decades. After reading this book, I realized that the development of cameras has gone through centuries. From1the concept of black box put forward by Abou-Ali Hassan based on pinhole imaging principle in the 20th century, to the application of simple camera in the 1940s, to the invention of film in the 1980s, the research and development of long and short focal length lenses in the 20s, the manufacture of fully automatic cameras in the 1970s and the popularization of digital cameras in the 1990s, cameras have made continuous progress with the continuous exploration of human beings.

A digital camera is equipped with a sensor, which is a grid structure with hundreds of pixels. The shutter allows light to enter the lens and reach the sensor. Each pixel measures the amount of green, blue or red light that can reach the filter, and the light measurement is converted into digital information, and then the final digital image is generated. This is the basic working principle of digital cameras.

After reading these materials, I suddenly became enlightened and had a feeling of being enlightened. I also have a lot of feelings. Yes, the power of science and technology is great. All this is the result of our careful observation, constant exploration, courage to practice and pursuit of truth.

It turns out that there are so many "why" in life that I don't know, but I never care. This book opened a door to scientific inquiry for me, lit the fire of "being diligent and inquisitive" and sowed the seeds that I should learn more and use science more since I was a child. Because there are endless "why" waiting for us to discover and explore. So now we should study hard, think hard, ask questions well and make our own contribution to the future development of human science and technology.