Contents of scientific and technological related manuscripts 1
Catalogue of scientific papers II
Catalogue of scientific and technological related manuscripts 3
Catalogue of scientific and technological related manuscripts 4
Catalogue of scientific and technological related manuscripts 5
Catalogue of scientific and technological related manuscripts 6
Science and technology celebrity story 1
When Newton was twenty-three, there was a plague in London. In order to prevent students from being infected, Cambridge University informed students to leave school and go home to avoid the epidemic, and the school was temporarily closed. Newton returned to his hometown of Lincolnshire. In the days when he didn't go to school in the country, he never stopped studying and researching. The basic work of gravity, calculus, optical analysis and other inventions was completed during this period.
At that time, children in rural areas often used slings for several rounds and then threw stones far away. They can also hold a bucket of milk over their heads without the milk falling down.
These facts made him suspicious: "What is the power to keep the stones in the slingshot and the milk in the bucket from falling?" For this question, he once thought of Kepler and Galileo. He went from vast space, endless planets, cold moon to huge earth, and then thought about the interaction between these giants. At this time, Newton plunged into the calculation and verification of "gravity". Newton plans to use this principle to verify the laws of the planets in the solar system. He first deduced the distance from the moon.
The distance between the earth, because the quoted data is incorrect, the calculation result is wrong. Because according to theory, the centripetal acceleration of the moon should be 16 feet per minute, but in fact it is only 13.9 feet. Newton didn't lose heart in the predicament of failure. On the contrary, he studies harder with greater efforts. After seven years of cold and heat, at the age of 30, he finally proved the world-famous "law of gravity" and laid the foundation for theoretical astronomy and celestial mechanics.
During this period, Newton also studied optics and discovered the origin of color. On one occasion, he used a homemade telescope to observe celestial bodies. No matter how he adjusted the lens, his viewpoint was always unclear. He thinks this may be related to the refraction of light. Then the experiment began. He left a small round hole in the darkroom window to transmit light, and put a prism behind the indoor window. A white screen was hung behind the prism to receive the light folded by the prism. As a result, to a big surprise, Newton was surprised to see that the refraction received on the white screen was elliptical and had two ends.
Show colorful colors. Newton thought deeply about this strange phenomenon. Knowing that light is refracted, the white light of the sun is scattered into seven colors: red, orange, yellow, green, blue, indigo and purple. So white light (sunlight) is composed of seven colors of light: red, orange, yellow, green, blue, indigo and purple. It is for this reason that nature is sunny after the rain, and the sunshine is refracted and reflected by the raindrops around the sky, forming a colorful rainbow.
Newton pointed out after further research that everything in the world has color, not itself. The sun shines on everything, and every object only absorbs the color it accepts and reflects the color it cannot accept. The color of this reflection is the color of various objects that people see. This theory accurately reveals the origin of color, and all kinds of color theories that have appeared in the world since ancient times have been overthrown by it.
Scientific and technological composition II
Today, I visited the exhibition of Science and Technology Center. I learned a lot of scientific and technological knowledge here.
When you come to the exhibition, you will see a lot of science and technology plays. There are magical height measurements, beautiful phantom fountains, exciting formula F 1 racing cars, and sloping cabins that make you dizzy. ...
Standing on the weighing machine, you can know your different weights on different planets. How interesting! It's amazing that a small focusing machine has such incredible magic!
Invisible man is the most amazing! One person walks into the corner and sticks his head out of the hole, and another person will see a wonderful phenomenon: seeing his head but not his body. This is mainly because the reflection imaging of the plane mirror makes the whole corner and the hut blend into one, causing human visual errors, so people can't see their bodies. I admire that people's brains are so developed that they can invent such a magical "invisible man". I want to invent more things like them when I grow up!
After watching the exhibition, I benefited a lot: the old China is a thing of the past, and now the new China is technologically advanced and prosperous. A scientist once said, "Wisdom comes from life." As long as we study hard now and contribute to the cause of the motherland when we grow up, the new China will create more glories in by going up one flight of stairs! As long as you find the right goal, work hard and persevere, you will definitely reach the peak of success. Work hard, believe in yourself, you can do it!
Composition of science and technology
This is the future world. Here, there are all future technologies: ocean-going spacecraft, flying cars, talking maps, flying letters and so on.
It is not enough to have future technology, but also some gadgets: super toys, mechanical ants, screaming books, toy cars that can drive themselves, and so on.
There is no end to science. As long as you have a dream, you can realize it.
There is a famous saying in the world: knowledge is the wing that flies to the sky.
Scientific composition 4
Today, the school organized a science and technology week.
I took part in the triple jump of table tennis. Just put a ping-pong ball down from one glass, blow it hard and blow it into another glass.
When I blew the second cup, it was time. He Jiahui and Xie and I went to watch rowing and racing. I heard that I could do table tennis triple jump, so I played it again. Blow it until I feel dizzy. Then we went to watch other games. After reading it, we went back to the classroom happily.
I am really happy today.
Scientific composition 5
Today, I came to Chongqing Science and Technology Museum. The first thing I saw was the automobile technology exhibition. I see the engine, which is the heart of the car. Next, I looked at the steering wheel that controls steering. Next, I saw the model of waterwheel and piano. I also played a scientific model for transporting iron balls. I understand the function of energy transfer, and I also see wind turbines, hydro-generators, solar generators and geothermal generators.
I also played a model of air pressure transmission. I think the Science and Technology Museum is very interesting, and the power of science and technology is really powerful!
Scientific composition 6
Today is a special day. Because the 13th Science and Technology Week starts today!
We didn't do exercises on the playground, but listened to Zhuang Xuetang. After explaining something about the science and technology festival, I left the football field. Suddenly, a model airplane flew past us in the grass, and he began to roll. And came at us, which surprised us. Later, he flew into the sky, but fortunately it was only empty. Then he landed at a super-fast speed, which opened our eyes.
In the afternoon, the whole campus was full of laughter, and the students were talking and laughing. A series of competitions began, and the students competed to challenge the first; The events include table tennis triple jump, model airplane competition, paper plane landing at fixed points, paper plane piercing, racing football and so on, each with its own characteristics.
The whole campus is full of happiness.
Scientific composition 7
With the improvement of living standards and the development of science and technology, everything in the world is different. Of course, my car is no exception
At first, my family only had an old bike. Dad rides it to work, and mom buys food and rides it. But because my home is far from school, it is hard for my parents to drive me to and from school, so my father bought a new motorcycle.
Since we bought a motorcycle, my parents and I have saved time and effort.
It's almost summer vacation, and my mother thinks it's inconvenient to travel and ride a motorcycle, so she bought another car called Dongfeng Citroen. After buying a car, it is not only convenient to travel outside, but also it will not affect travel even if it rains and snows outside. It is hot in summer and cold in winter. It doesn't matter. There is air conditioning in the car. You can not only listen to music to relax, but also watch movies on the way!
Now technology is really more and more developed, and I believe that cars in the future will be more developed.
Composition of science and technology
Today is the weekend. Teacher Wang organized a class practice activity in the Science and Technology Museum.
At nine o'clock in the morning, we all arrived at the activity site on time. After meeting with everyone, Mr. Wang invited a commentator to explain the scenery of the Science and Technology Museum to us.
The tour began, and the narrator's aunt began to explain. First, the narrator's aunt introduced us to a series of conductive devices, including an electric box and faraday cage ... and then an uncle came to show us.
First, an electric box begins to conduct electricity, and the point is transferred to the electric column, and then faraday cage is shocked. Aunt said, "Because the cage has insulation equipment, the simulation is that when the car is hit by lightning in rainy days, nothing will happen if you sit in the car." Then there is a glass cage. My aunt said there would be a violent reaction when the phone was turned on. Sure enough, the cage was electrified and made a horrible sound like a lion's roar, which scared me half to death. According to my aunt, the whole process is called "rushing to the crown" and the Atlantis ladder. After that, my aunt waited for us to visit the tilting cabin and just visiting. ...
After explaining, we can move freely. Song Kunying and I have played many projects together, including Deng Li's power generation, human body conduction and dynamic magnetic ball. ...
What impressed me the most was the 4D movie called Turtle Journey.
This visit to the Science and Technology Museum left a deep impression on me, and I learned a lot. I like science, which brings us a lot of convenience and benefits mankind.
Scientific composition 9
Technology can let us walk into the future! Go to the world! Technology can also help us not to be too tired and lack sleep! Technology can let us know the secrets of nature! Technology can also help us solve various problems! Technology is still … so, technology is an indispensable thing around us. Today, the school gives us an opportunity to see the magic and mystery of science and technology.
It's time for running and exercising. Everyone ran to the playground happily, but there was no running exercise today. Why? Oh! It was supposed to be the opening ceremony of the afternoon event. Zhuang Xiao came over and said, "Welcome to Science and Technology Week. Today, several experts from the school came to show us how to play with toy planes. At the beginning of the performance, it flew around and looked great. " Bang, bang ... "Everyone applauded the expert's performance.
After that, we watched the "masters" perform downstairs ... After a while, I went to see the performance, which was wonderful and got a small gift!
This science week is really interesting!
Scientific composition 10
Now it's 4059, and now the technology is very developed. What you are looking at now is the multifunctional egg room. The multifunctional robot egg room can fly, and the flight function can let you fly into space. You can also walk in the street and suck garbage while walking.
There is also an automatic TV. Automatic point is to watch whatever you want. And an automatic dining table. You can eat anything as long as you think about it. If the taste is too weak, a pair of robots will add more ingredients to the dish.
If it is night, the multifunctional egg room will automatically turn on the lights. The multifunctional egg room is very light, only as light as an ant.
This is my multifunctional egg room!