In 3500 BC, people invented the wheel. At that time, some wheels were made of stone, just a big stone plate. Since the advent of wheels, great changes have taken place in human production and life, saving physical strength and improving work efficiency. The use of wheels is becoming more and more common in modern society. It is hard to imagine what we humans would do without wheels.
9. nails
According to archaeologists, as early as 3000 years ago, Sumerians in the two river basins began to use nails, but those nails were made of clay. Nails seem simple, but they were very useful in ancient times. Nails are indispensable for building houses, production tools, vehicles, ships and weapons. It's just that nails didn't seem to be used much in ancient China, so they used to be called foreign nails.
8.compass
Compass is one of the four great inventions in ancient China, and its invention has played an inestimable role in the development of human science and technology and civilization! The greatest contribution of compass may be used for navigation. With compass, there will be a great navigation era. Tour guides have played an inestimable role in discovering the new world and understanding the world.
7. printing
Printing is one of the four great inventions in ancient China. Printing originated from Taoist woodblock printing, developed and perfected in Bi Sheng, resulting in movable type printing, which was spread to Europe by Mongols. But what really played a revolutionary role was the printing press invented by German Johannes Gutenberg in 1440. His invention triggered a media revolution and quickly promoted the development of western science and society.
6, gunpowder
Gunpowder is one of the four great inventions in China. The study of gunpowder began with the alchemy of ancient Taoism, but the invention of gunpowder was the result of the failure of alchemy. The invention of gunpowder changed the war history of mankind and made mankind enter the era of hot weapons from the era of cold weapons.
5. telephone
It is generally believed that the telephone was invented by Alexander Graham Bell. But in fact, the inventor of the telephone is still controversial. Some people think it's Italian antonio meucci, others think it's Irina Kaptelova Gray. The invention of the telephone has narrowed the distance between people and spread information faster.
4. Light bulb
Edison had more than 2000 inventions and 1000 patents in his life. But the most widely known is the light bulb. Strictly speaking, Edison was not the inventor of the electric light bulb, but an innovator. As early as 1854, the German Henry Goebbels invented the electric light bulb. Some people think highly of Edison: in Greek mythology, Prometheus stole fire from human beings; Edison brought light to mankind.
3. penicillin
1928 British bacteriologist Fleming first discovered the world's first antibiotic-penicillin. The invention of penicillin greatly reduced the death rate on the battlefield. Before that, many soldiers died of wound infection. It can be said that penicillin has saved mankind in a sense, and people no longer have to worry about infection!
2. Condoms
The role of condoms is obvious. It is no exaggeration to say that condoms are a sexual revolution. With condoms, people can enjoy the relationship with men and women happily without worrying about pregnancy, and the incidence of sexually transmitted diseases is greatly reduced. Generally speaking, condoms help to reduce the burden on the earth and control the population overflow.
1, Internet
The biggest feeling for us is the internet. You all used the internet when reading this article, so you all have the right to speak!