20 What are some of the major discoveries and inventions in practice

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1.Television: The birth of television is one of the greatest inventions of mankind in the 20th century.

2.Nylon: Nylon is the world's first synthetic fiber.

3.Plastics: The invention of plastics is one of the masterpieces of humanity in the 20th century.

4.Airplane: One of the most significant inventions of the twentieth century was the birth of the airplane.

5.Computers: Computers were introduced in 1946 and were motivated by the desire to invent a machine that could perform scientific calculations, hence the name "computer".

6.Internet: In the 20th century, communication technology had one of the great impacts on human society.

7.Lasers: The advent of lasers and lasers has been called one of the most significant scientific discoveries of the 20th century.

8.Atoms: In 1900, the German scientist Planck discovered that when atoms are fissioned, they release a huge amount of energy, which he called &ldquo.

9.Quart &rdquo.

10., a discovery hailed as the discovery of the century.

11.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 dramatically changed lifestyles.

12.Automobile: In 1913, the American automaker Henry.

13.Ford officially opened his car assembly line.

The inventions of the 20th century include airplanes, computers, television, etc., and the discoveries of the 20th century include DNA, penicillin, and so on. The airplane is one of the most important inventions of the early 20th century, and is recognized as an invention by the American Wright brothers. Since the invention of the airplane, the airplane has increasingly become an indispensable tool of modern civilization.

It profoundly changed and affected people's lives, and started the history of people's conquest of the blue sky.

The inventor of the computer was Johann von Neumann. As one of the most advanced scientific and technological inventions in the 20th century, the computational hosiery machine has had an extremely important impact on human production and social activities, and has developed rapidly with a strong life posture and excitation force.

DNA was first isolated in 1869 by Swiss biochemist Friedrich Michel from pus from surgical bandages, and since this microscopic substance is located in the nucleus, it was then called a nuclear protein.

In 1928, the British bacteriologist Fleming first discovered the world's first antibiotic, penicillin, and Alexander Fleming discovered penicillin by a lucky mistake.

1. Where does the text embody the 20th century's "call for wind and rain"?

2. What does the global village illustrate?

3. After learning the text, how do you come to know "calling for wind and rain"?

4. What was human life like before the 20th century?

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

Extended Materials: The Century of Wind and Rain mainly talks about the development of science and technology in the 20th century, showing the great changes and brilliant prospects brought by the rapid development of science and technology to human life, and arousing students' strong interest in loving science, learning science and exploring science.

Part 1 (1st paragraph): The 20th century was a century of wind and rain.

Part II (Section 2 4): The Significance of Science and Technology to Humanity.

The major inventions and discoveries of mankind in the 20th century are: the invention of radio communication by Marconi in Italy in 1901, the invention of the airplane by the Wright brothers in the United States in 1903, the invention of plastic in Bekeland in Belgium in 1907, the discovery of penicillin by Fleming in 1928, the invention of the pure television game machine in Baird in 1923, the successful development of nuclear power in the United States in 1942, and the Turing computer in the United Kingdom in 1943. In 1953, British scientist Crick and American scientist Watson discovered the double helix structure of DNA, in 1957 the Soviet Union launched the first artificial satellite, in 1967 South African surgeons successfully performed organ transplant surgery, and in 1978 the first test-tube baby was born in the United Kingdom.

1. Atomic bomb.

In August 1945, Pandora's box of destruction was opened in Hiroshima and Nagasaki, Japan, when the international community was bent on overwhelming each other with this extremely powerful and lethal destructive **. The United States first successfully tested the explosion in New Mexico in July 1945, the Soviet Union followed in 1949, the United Kingdom in 1952, France in 1960, and China in 1964, according to declassified information, China spent a total of 2.8 billion yuan for the first atomic bomb.

2. Space shuttle.

In 1959, the Soviet Union's unmanned spacecraft successfully landed on the moon for the first time, and a large number of ** were returned. The Apollo moon landing in the late 60s was the first step for mankind to set foot on a planet other than Earth, and since then, the United States has gradually left the Soviet Union behind in space exploration. With the advent of the Space Shuttle, the chances of success in traveling to outer space have increased dramatically, and scientists predict that humans will travel to outer space after the year 2000 AD.

3. Sputnik.

The first artificial satellite was successfully tested by the Soviet Union on October 4, 1957, followed by the successful trial of the American Explorer 1 on January 31, 1958. Artificial satellites, which were originally used in military science and technology, have gradually evolved into a family of satellites for different purposes, such as communications, mapping, detection, and meteorology.

4. Television. In 1923, the soul of television, the picture tube, was born. Television technology was widely used in the 40s, 1954 ushered in the era of color television, and after the 60s, almost most countries established television stations. This square box has created countless happy moments for mankind.

5. Internet.

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