What do you think are the top 10 scientific and technological inventions in the world since the 20th

The science and technology of the 20th century also created television, nylon, and plastics, which greatly changed people's lives.

1. TV. The birth of television is one of the greatest inventions of mankind in the 20th century. In modern society, life without television is no longer conceivable.

Black-and-white and color TVs of all models and functions are miraculously and rapidly changing people's lives from assembly lines to factories, schools, hospitals, and homes around the world.

2. Nylon. Carothers, an American organic chemist, made a polymer from adipic acid and hexamethylenediamine in 1935, which was called polymer 66 at that time because these two components contained 6 carbon atoms. He melted the polymer and pressed it out with an injection needle, where it was stretched under tension called a fiber.

This fiber, polyamide 66 fiber, was named nylon after industrialization in 1939, and it was the earliest synthetic fiber variety to achieve industrialization.

3. Plastics. In the 60s of the 19th century, due to the shortage of ivory in the United States and the lack of raw materials for making billiards, the earliest artificially manufactured plastic celluloid was patented in 1869. Although celluloid is the earliest artificially manufactured plastic, it is a man-made plastic, not a synthetic plastic, the first synthetic plastic is a phenolic resin heating mold, which was made in the early 20th century, in 1910 by the American-Belgian chemist Beckland.

The significance of the invention of plastics

Plastic products are too common around us, you need plastic bags when you go to the supermarket to buy things, the packaging bags of snacks are also plastic, the crisper boxes you use to put food are also plastic products, and the silicone you use for smartphones, household appliances, cars, and even breast augmentation all contain plastic materials.

Plastic alone has saved the lives of countless elephants, so many environmentalists have no reason to hate plastic products, not because plastic pollutes the environment, but humans pollute the environment.

Plastic has also left valuable audio-visual materials for our human history, in the past, it was difficult for us human beings to leave any ** information except painting, and those who could afford to hire painters were rich, and the poor naturally could not leave anything.

1. Before the 20th century. What is human life like?

2. What discoveries and inventions do you think will be made in the 21st century?

In the 20th century, humans landed on the moon and dived into the deep sea to gain insight into celestial bodies tens of billions of light-years away and explore the mysteries of the atomic nucleus. In the 20th century, television, program-controlled**, the Internet, civil aircraft, high-speed trains, ocean-going ships, etc., increasingly turned the planet inhabited by people into a close-knit "global village".

The comfort and convenience of human life are beyond even the imagination of the princes and nobles of the past. Science is changing the spiritual and cultural life of mankind, as well as the material life of mankind.

Top 10 most influential inventions of the twentieth century.

1. Internal combustion engine: Due to the emergence of the internal combustion engine, the development of transportation and suburbanization have been promoted. It also leads to pollution.

2. Jet planes: Jet planes make people travel for a much shorter time. As a result, the economy of the entire world has grown rapidly.

3. Communication satellites: In 1945, a great writer first proposed the idea of communication satellites in his **. Now, half a century later, the use of communication satellites has made global communications a reality.

4. Radio broadcasting technology: Since the invention of the radio in the 19th century, the rapid development of radio broadcasting technology, coupled with animation and video technology, has greatly changed our way of life. Although we do not yet know what radio broadcasts bring us, we have undoubtedly become loyal listeners to it.

5. Radar: Radar has made a huge contribution to the invention of television, because the early radar used a cathode ray tube. Moreover, radar helps cosmologists search for distant galaxies.

6. Laser: Without lasers, modern communication would cease to exist.

7. Penicillin: The efficacy of penicillin and its impact on society are incomparable. The only contraceptive pill that could match it in terms of influence and practical efficacy was the birth control pill that appeared later.

8. The Green Revolution: The So-called"Green Revolution"It refers to the measures adopted by human beings to increase the production of food per unit area. Whether humanity will continue to rely on this approach in the future has become a question that we will inevitably face in the coming decades.

But at least not"Green Revolution"Humanity is still mired in the misfortune of starvation.

9. Material technology: The development and wide application of material technology have greatly changed people's daily life.

10. Computers: Computers equipped with transistors, integrated circuits and microprocessors have led to the development of digital technology, making it possible to convert all kinds of information into binary forms of 0 and 1.