Just now, the scientific and technological achievements that shocked the world again, what are the achievements of "Great My Motherland"?

Clay movable type invented by China in the Northern Song Dynasty (1048) and Bi Sheng (970- 105 1) marked the birth of movable type printing. He was the first inventor in the world, about 400 years earlier than the movable type printing of German Johannes Gutenberg.

2. There was no record of compass in the Northern Song Dynasty.

Compass is the result of China ancient working people's understanding of magnet magnetism in long-term practice. As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science, technology and civilization. In ancient China, the compass was first used for rituals, etiquette, military affairs and divination, and to determine the orientation when looking at Feng Shui.

3, gunpowder ancient alchemist in the Tang Dynasty.

The invention of gunpowder is the result of people's long-term practice of alchemy, and it has a history of 1000 years. At the end of the Tang Dynasty, gunpowder had been used in the military.

4. Papermaking in the Eastern Han Dynasty: Cai Lun.

In the first year of Yuan Xing in the Eastern Han Dynasty (105), Cai Lun improved papermaking. He made paper from bark, hemp head, cloth, fishing net and other raw materials through crushing, mashing, frying and baking, which is the origin of modern paper. This kind of paper is easy to find, cheap and has improved its quality, so it is gradually widely used. In order to commemorate Cai Lun's achievements, later generations called this kind of paper "Cai Hou Paper".

Since the 6th century, paper-making technology has gradually spread to Korea and Japan, and then to Greece and Italy in Europe through Arabia, Egypt and Spain. 1 150, Spain began to make paper and established the first paper mill in Europe. Since then, France (1 189), Italy (1276), Germany (139 1), Britain (1494), and the Netherlands (/kloc-0).

In the 6th century, paper became popular in Europe. In medieval Europe, it is said that copying a Bible requires more than 300 sheepskins, and the dissemination of cultural information is extremely narrow due to the limitation of materials. The invention of paper provided extremely favorable conditions for the vigorous development of education, politics and commerce in Europe at that time.

The four great inventions are a series of glorious footprints left by China's ancient ancestors to the world, and they are symbols of great contributions made by human civilization and progress.

1, the invention of papermaking: it provided economical and convenient writing materials for human beings and set off a revolution in human writing carriers;

2. The invention of block printing greatly promoted the spread of culture;

3. The invention of the compass: it provided conditions for the navigation activities of European navigators;

4. Invention of gunpowder weapons: The use of gunpowder weapons changed the way of fighting, helped the European bourgeoisie destroy feudal fortresses and accelerated the historical process in Europe.

References:

Baidu Encyclopedia-Four Great Inventions in China