1. Television
The birth of television is one of the greatest inventions of mankind in the 20th century. In modern society, life without television is unimaginable. Black-and-white and color TVs of various models and functions are flowing from assembly lines into factories, schools, hospitals and homes around the world, miraculously changing people's lives rapidly.
2. Nylon
American organic chemist Carothers used adipic acid and hexamethylenediamine as raw materials to prepare polymers in 1935. Since these two components Each contains 6 carbon atoms and was called polymer 66 at the time. He then melted the polymer and pressed it out through an injection needle, and stretched it under tension to become a fiber. This fiber is polyamide 66 fiber. It was named Nylon after it was industrialized in 1939. It is the earliest synthetic fiber variety to achieve industrialization.
3. Plastic
In the 1860s, the United States was short of raw materials for making billiards due to insufficient ivory supply. In 1869, the earliest artificially manufactured plastic celluloid was patented. Although celluloid is the earliest artificially made plastic, it is an artificial plastic, not a synthetic plastic. The first synthetic plastic was made by heating and molding phenolic resin. It was made by the Belgian-American chemist Backlund in 1910 at the beginning of the 20th century.
4. Penicillin
Penicillin is a type of antibiotic. It is a drug extracted from the culture fluid of Penicillium. It is the first antibiotic that can treat human diseases. The discoverer of penicillin was British bacteriologist Fleming. Accidentally discovered that Penicillium can inhibit the growth of Staphylococcus aureus, so they tried to cultivate this mold and conducted many experiments, which proved that Penicillin can kill all Staphylococcus aureus within a few hours. Fleming invented penicillin, the nemesis of Staphylococcus aureus.
5. Airplane
One of the most significant inventions of the twentieth century is the birth of the airplane. The Wright brothers of the United States made significant contributions to the history of aircraft development in the world. In 1903, the first aircraft "Aviator" 1 that relied on its own power for manned flight was built, and the test flight was successful.
6. Computers
Computers came out in 1946. The fundamental motivation for computers is for people to create more material wealth and to extend the human brain and maximize human potential. get greater development. In the past 10 years, computer applications have increasingly penetrated into various fields of society, such as management, office automation, etc. As computers become increasingly intelligent, people simply call microcomputers "computers".
Baidu Encyclopedia--Inventions of the 20th Century