A great scientific and technological invention, what are the great inventions in China?

Watt, Steam Engine, 1769. The steam engine improved and invented by Watt is a great contribution to modern science and production, and has epoch-making significance, which led to the rise of the first industrial technological revolution and greatly promoted the development of social productive forces.

The Four Great Inventions are a series of glorious footprints left by ancient Chinese ancestors for the world, and a symbol of great contributions to the progress of human civilization.

1. The invention of papermaking: it provides economic and convenient writing materials for human beings and sets off a revolution in human writing carriers;

Before the Han Dynasty, people used bamboo slips, wooden slips and silk slips to write, which was very inconvenient. In the Western Han Dynasty, there was already Baqiao paper, and plant fibers began to be used to make paper, to the Eastern Han Dynasty. The eunuch Cai Lun summed up the experience of the working people, used tree bark, hemp, rags, old fishing nets, etc. as raw materials, and supervised the production of a batch of high-quality hemp paper.

This kind of paper, the raw materials are easy to find, and it is very cheap, and the output of paper has increased greatly since then.

China is the first country in the world to invent papermaking. The invention of paper has promoted the development of Chinese culture. Centuries later, it spread to countries such as Japan, India and Arabia, and later to Europe and the Americas through northern Africa.

2. The invention of engraving printing: it greatly promoted the spread of culture;

3. The invention of the compass: it provided the conditions for the navigation of European navigators; The application of the compass in navigation has greatly promoted the great geographical discoveries and the sea**. The invention of the compass originated from the study of how to orient the problem in ancient China, and it also shows that the ancients attached great importance to the problem of how to orient, for which the compass is known as one of the four great inventions of ancient China.

The ancient Chinese used the compass for military and navigational activities, and was also used for public opinion, and later it was introduced to Europe, where it played an irreplaceable role in European navigation activities and geographical discoveries. Among the inventions of nautical technology, the compass is also the single most important invention.

4. The invention of gunpowder: The use of gunpowder changed the way of warfare, helped the European bourgeoisie destroy the feudal fortress, and accelerated the historical process of Europe. Chinese gunpowder advanced the course of world history.

Engels once spoke highly of China's role in the invention of gunpowder: "It has now been proved beyond any doubt that gunpowder was transmitted from China to the Arabs through India, and from the Arabs to Europe through Spain along with gunpowder**." "Gunpowder shook the feudal rule of Western Europe, and the knight class, which used to rely on cold weapons to show off its might, is declining!

The invention of gunpowder greatly promoted the process of historical development and was one of the important pillars of the European Renaissance and the Reformation.

There are new inventions in every industry. For example, in the electronics industry, 3D color TVs, holographic images, and flexible screens for mobile phones.

Mechanical development is also constantly innovating, bullet trains, high-speed rail, light rail, and subways are constantly breaking through the lighter and faster.

In recent years, there have been no inventions, they have all been developed on the basis of the original.

It is generally believed that bai, high-tech is a kind of talent secret

set, knowledge dense set, technology dao

Cutting-edge science and technology that is intensive, capital-intensive, risk-intensive, information-intensive, industry-intensive, competitive and permeable, and has a significant impact on the development and progress of human society.

High-tech inventions are inventions and innovations based on these high-precision cutting-edge science and technology, and inventions and creations that will have a significant impact on mankind.

The popular understanding is that high-tech must be industrialized in order to form industrial economies of scale! And high-tech knows no borders! It is necessary for the global high-tech industry to jointly respond to the common destiny of mankind!

The "high" of high technology is relative to conventional technology and traditional technology, so it is not an immutable concept, but has a historical, developmental, and dynamic nature. Today's high technology will become tomorrow's conventional technology and traditional technology. Some estimate that only 1% of the technology and knowledge that people use today will be 50% in 60-60 years, and 99% will be obsolete.

From the perspective of the development of high technology in various countries in the world, high technology is not a single technology, but a new technology group at the forefront of science, technology, and engineering. The various components of this group influence each other, complement each other, and promote each other. At the same time, because high technology is linked with high-tech industries, it is also a production system that integrates science, technology, and production, and is vigorously promoted by the market.

In addition, high-tech is also different from the so-called "accumulation of experience" in the sense of general technology. It is not an accumulation of experience, but a technology based on scientific discoveries or creations.

<> scientists: 1. Edison: inventor of direct current and electric light;

2. Tesla: the inventor of alternating current;

3. Carl Benz: inventor of the automobile;

4. Stephenson: The inventor of the train;

5. Daguerre: inventor of the camera;

6. Charles Towns: The inventor of the laser;

7. John Baird: The inventor of television;

8. Willis Kelly: The inventor of the air conditioner;

9. Carl von Lind: The inventor of the refrigerator liquid banquet;

10. Von Neumann: the inventor of the computer;

11.Berners Lee: inventor of the Internet;

12.Jack Kilby: inventor of the microchip;

13.Martin Cooper: inventor of the mobile phone;

14.The Wright Brothers: The inventors of the airplane.