Modern science and technology essay, wonderful supplementary topics, to junior high school essay

In ordinary study, work, and life, everyone inevitably comes into contact with composition, and with the help of composition, people can achieve the purpose of cultural exchange. What makes a good essay? The following is an essay on the magical charm of science and technology that I have compiled for you, and you are welcome to share it.

Hey, what's going on. "It's funny, it's weird! ”

An exclamation came from the Jingmen Science and Technology Museum. When I entered the gate of the science and technology museum, I heard groups of boys talking curiously, and some quiet girls whispering. Isn't this our little reporter visiting the Secret Science and Technology Museum? Follow in our footsteps and take a look.

Walking into the Science and Technology Museum, the first thing that catches your eye is some aircraft models and satellite models such as Long March 1, 3, Shenzhou 5, and Tiangong-1 that are traveling in the universe. Portraits of several fully armed and heroic aerospace heroes. Waving big hands is welcoming us little reporters.

In the Science Exploration exhibit, my eyes were attracted by the three colors of light, "Wow, that's beautiful!" "I immediately ran over. It turned out that there were three long pillars of glass, each containing three colors of liquid, green, blue, and red.

How do you play with this thing? I'm going to give it a try! I held the joystick in both hands and pressed down hard, and the bubbles popped out of the different pillars of glass, large or small, rising faster or slower.

What's going on? With this question in mind, I approached the table next to the machine and suddenly realized. "Oh, it turns out that each glass column is filled with silicone oil of different concentrations, and because of the different concentrations of silicone oil, the bubbles produced are also different in size and rise at different rates.

There is such a deep knowledge in the little bubble! ”

Then we came to the machinery world exhibition area and learned that in December 1961, Jiangnan Shipyard built China's first 120,000-ton hydraulic press, which can generate hundreds of millions of newton pressure and process thousands of tons of heated steel billets into various shapes of steel like kneading.

I went back to the World of Mathematics exhibition and learned that topology is an ancient science, it is a branch of mathematics, it is the study of the position of figures, not the size or shape of figures, and can turn a straight line into a curve, or a square into a circle. The principle of topological transformation is used to make many manufacturing processes simple. Once again, I felt the power of mathematical knowledge.

I walked slowly in the science and technology museum and looked at it slowly, and a wave of emotion arose: how many people are silently dedicating their life's energy and talent to the motherland from a very backward and weak country to a scientific and technological power such as "you can go to the moon for nine days and catch turtles in the five oceans"!

I want to study hard, study hard for the prosperity of the motherland and the strength of the country, grow up and contribute my own strength, so that the light of magic and charm of science and technology illuminates the world.

Technology is all around me.

Over time, technology has become more widely used around us. It is like a ray of warm sunshine that illuminates our path to prosperity; It is like a colorful rainbow, holding up the hope of the motherland tomorrow; It is like a gratifying spring rain, nourishing our hearts that have long been desperate for labor-saving convenience.

In the old China, which was backward in science and technology, many problems brought inconvenience to people. When Qin Shi Huang built the Great Wall, how much manpower and material resources were spent, it is said that the Great Wall was built by people from the accumulation of bones. In ancient times, there was no rapid means of transportation, and people relied on human feet to transport letters, and it took about three months to get them out.

It's not like now, just call**, send an email and you'll receive it right away.

Time is like an arrow, the sun and the moon are like a shuttle. Now, in this era of technology, people can see technology everywhere. The TV set at home can learn about national events and relax your mind; The refrigerator at home can store food so that it does not rot; The washing machine at home can wash clothes quickly without having to scrub them by hand; The computer at home can also be used to check information on the Internet, chat with friends, and so on.

When I stepped out of the house, cars, vans, and trucks were running on the wide road. The overpasses crisscross the city, making it a dazzling sight to behold. The high-rise buildings are like towering mountain peaks that reach into the sky, making people's eyes shine.

Walking into the beautiful campus, the tall teaching buildings stand in the middle of the campus, which is all thanks to science and technology. The classroom is used a lot, the lights are bright, and the security door guards the safety of the classroom at all times.

In the 21st century, no matter where we go, technology is all around us, relieving us of fatigue and bringing convenience. It can be said that technology is everywhere all the time.

Looking at this era surrounded by high technology, all this is the crystallization of the wisdom of the working people, the eternal pride of the Chinese people, and the only way for China to move toward prosperity.

Technology is all around me!

Technology, the future.

Technology is constantly changing our world, making our lives colorful, interesting and convenient.

Suddenly, like a night of spring breeze, thousands of trees and pear blossoms bloom. "In the last two hundred years, science and technology have developed rapidly. From the kerosene lamps used in the Ming and Qing dynasties to the energy-saving lamps used today; From wireless telegraphy at the beginning of the nineteenth century to cable telegraphy at the end of the nineteenth century**; From the "Eniake" computer born at the University of Pennsylvania in the United States in the mid-twentieth century to today's multi-** computer; From the "Big Brother" used at the end of the twentieth century to today's 3G network.

Because of technology, our world has changed dramatically, and at the same time, our lives have changed.

So what will the world look like in the future?

The twenty-first century will be the era of biotechnology. In the future, progress will be made in fermentation products such as organic acids, the development of biological nitrogen fixation and protein engineering, biopesticides, artificial intelligence, human genome project, pollution control, etc., and gradually develop into a cross-field biotechnology era.

The 21st century will be the era of intelligent transportation. With the increase in the number of cars, traffic accidents, traffic jams and exhaust pollution are becoming more and more serious problems. Therefore, the road traffic is managed by the railway (line), so as to greatly improve the safety of driving and the utilization rate of the road.

The main advantages are to improve the safety of the car and implement automatic control, and the second is to implement intelligent control of traffic, such as automatic payment; The third is to provide the best driving route for ground driving through the satellite positioning system.

The twenty-first century is the nano era. Nanotechnology is a nanometer (1 nanometer is equal to one billionth of a meter) as the length of the product technology, the micromachinery made of is very small, such as the smallest electromagnetic motor at present, the weight is only 4 milligrams, the diameter is 8 mm, the speed is up to 10,000 revolutions per minute, and the working voltage is volt. Nanotechnology will be applied to various fields of human beings, such as troubleshooting in dangerous environments, automatic adjustment of household appliances, and medical treatment of human diseases as a doctor.