What are the major inventions in the world?

Paper-making, printing, gunpowder, compass, steam engine, electric light, telephone, computer, rubber, toothbrush, zipper, jeans, TV, plastic, airplane, rocket, spaceship, space shuttle, artificial satellite, space station, Internet and so on.

Papermaking, printing, gunpowder and compass laid a solid foundation for Chinese civilization. The birth of steam engine, electric light, telephone and computer has become a great driving force for social development. Toothbrushes, zippers, jeans and televisions make our life convenient and colorful.

These inventions have been carved into the long scroll of history and have deeply influenced our lives. They all condense the wisdom of human beings, show the innovative spirit of human beings and promote the process of human civilization.

Extended data:

1. papermaking

Papermaking is one of the four great inventions in China. Paper is the crystallization of the long-term experience and wisdom of the ancient working people in China. This is an outstanding invention in the history of human civilization.

China is the first country in the world to raise silkworms and weave silk. In ancient China, the working people spun silk from superior cocoons, and the remaining evil cocoons and diseased cocoons were made into silk floss by bleaching. After floating, some residual flocs will be left on the mat. When the flossing frequency is high, the residual flossing on the pad will accumulate into fiber sheets, which can be peeled off after drying and can be used for writing. This kind of floc is called "He Qi" or "square floc" in ancient books because of its small number of by-products. This shows that the origin of ancient papermaking in China is related to silk floss.

2. Compass

Compass, called Sina in ancient times, is mainly composed of magnetic needles installed on the shaft. Under the action of natural geomagnetic field, the magnetic needle can rotate freely and keep in the tangential direction of magnetic meridian. The north pole of the magnetic needle points to the geographical north pole, and we can use this property to identify the direction.

It is often used in navigation, geodesy, tourism and military affairs. The invention of the compass with physical direction indication has three parts, namely Sina, compass and magnetic needle, all of which belong to the invention of China. According to ancient mine records, it first appeared in the Cishan area during the Warring States Period.

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 sacrifice, etiquette, military affairs and divination, as well as determining the orientation when looking at geomantic omen.

Step 3 print

Printing is one of the four great inventions of working people in ancient China. Engraving printing was invented in the Tang Dynasty and was widely used in the middle and late Tang Dynasty. In Song Renzong, Bi Sheng invented movable type printing. Although movable type printing appeared in Song Dynasty, it was not widely used, while block printing was still widely used.

Printing is the forerunner of modern human civilization, which creates conditions for the wide spread and exchange of knowledge. Printing first spread to Korea, Japan, Central Asia, West Asia and Europe.

4. gunpowder

Gunpowder, as its name implies, can be caused by sparks, flames and other violently burning drugs. According to Fan Ziran, China had been used for folk livelihood in the Spring and Autumn Period, and Fan Ziran said that "saltpeter leads a long way".

Gunpowder is one of the four great inventions in China. It is a substance that can burn quickly and regularly under the action of appropriate external energy, and at the same time produce a large number of high-temperature gases. Militarily, it is mainly used as the propellant of bullets and shells, the propellant of rockets and missiles and the energy source of other driving devices, which is an important part of ammunition.

Outstanding achievements in the history of human civilization. Because of its lethality and shocking power, gunpowder is one of the important inventions of human civilization, which has brought the functions of relieving armistice and security defense to mankind.

5. Steam engine

The steam engine is a reciprocating power machine, which converts the energy of steam into mechanical work. The appearance of the steam engine caused the industrial revolution in the18th century. Until the beginning of the 20th century, it was still the most important prime mover in the world, and then it gradually gave way to internal combustion engines and steam turbines.

A steam engine needs a boiler to boil water to produce high-pressure steam. This kind of boiler can use wood, coal, oil or natural gas or even combustible garbage as heat source. The expansion of steam pushes the piston to do work.