Inventions and discoveries of the 20th century.

1927, the production of audio film is completed.

From 65438 to 0946, the United States developed the first electronic computer in the world.

1969, the internet produced atoms of 1900 years. German scientist Planck found that atoms are released when they split.

Huge energy, which he called "quart", is called century development.

Now

Stainless steel 1903 years ago, steel was not only easy to rust, but also easy to be corroded. 1903 to 19 12 years

Suddenly, stainless steel became an outstanding industrial metal as soon as it appeared. Now not only stainless steel is used.

In industry, it is also widely used in medical treatment and human body.

Before air conditioning appeared, the emperor of China needed to get ice from the mountains in summer. 19 1 1 year, W.

Carrier invented air conditioning, and people began to conquer nature.

Aspirin 1897, synthesis of acetylsalicylic acid by Felix Hoffman, Germany, two

A few years later, it was registered as aspirin, and a century later, it became the most popular drug.

Automobile 19 13, American automobile manufacturer Henry Ford officially started his automobile assembly.

The assembly line reduced the cost, improved the efficiency, and made cars enter the homes of ordinary people, which became this.

A decisive event in the last century.

Aircraft190 14 August 200414, the first powered aircraft began to fly. 1933, in the world

The opening of the first regular air route has greatly expanded the space for human activities.

Electric light 19 13. After the patent of tungsten wire was obtained, the electric light began to light up.

Fax 1902, the fax is sent for the first time, and the fax is used for business from 1926.

Movies from 1895 to 65438+February 28th became an entertainment and the earliest popular audio.

The film Jazz Singer was released in new york on June 1927, which was also the first color film "City of Vanity".

City 1935 was released in Britain and America at the same time, and the first wide-screen movie 1953 came out.

Copier 1907, the world's earliest photographic copier appeared in new york, USA.

1959, Xerox 9 14 electrostatic copiers were widely used.

Color photographs had the principle of color photography in the last century, but it didn't appear until the 1940s.

Only with the first batch of color films, color photos have gone through a long cross-century road.

Television Nowadays, the number of televisions per capita in the world is extremely high (one per 10 population on average).

It started at 1927 and started in the hands of Americans.

The world's largest computing, invented by the Internet in this century, is made up of many internet networks.

Computer network and television together make the world news that happens every day spread to the earth in time.

Every corner has opened the curtain of the information age.

Laser 1960 The first laser was born.

Contact lenses were invented by medieval glasses until 1945 when contact lenses appeared.

1964 made substantial progress and invented soft contact lenses.

Heart recorder 1958, 60 years since Oksenning, Sweden invented the heart recorder.

Generation began to apply, so far, it has saved countless lives.

The development of electronic computers began in World War II, and the first computer was produced in 1943.

A computer similar to today's electronic computer.

Penicillin was first invented by Fleming in England in 1929, and was used in the second world in 194 1 year.

Soldiers injured in World War II are considered to be second only to the invention of atomic bombs.

Contraceptive pill 1959 was developed, and human beings began to control their birth rate.

Plastic did not exist before this century, but has become an indispensable thing in our century.

It started with the manufacturing method of phenolic plastics invented by American L. Baekeland in 1909.

Radar Since 1935, people began to use extremely short radio waves to measure long-distance or

An invisible target.

Radio 190 1 Italian Marconi successfully conducted the first radio communication.

Transistor radio was invented in 1948.

X-ray has existed since 1895, and it was not applied to medical treatment until 10 years ago this century.

It exerts great energy.

Nuclear energy was realized in 1939 and used for power generation in 1956.

Watches are one of the inventions that have been changed many times in human history, and they are very comfortable to wear.

The watch appears in 1904.

Artificial kidney Willem Koff designed the first artificial kidney in 1945. This hemodialysis device

Resettlement has prolonged the lives of countless patients with renal failure.

Robot 1983 is manufactured by Volkswagen in Wolfsburg, Federal Republic of Germany.

Made the first robot.

Sputnik19571010 On October 4th, the first Sputnik launched by the former Soviet Union opened the door to mankind.

The space age of class.

In the history of credit card currency, the emergence of credit card is the biggest revolution since the emergence of currency. first

This credit card was issued in the 1920s, and the commonly used credit card is 1950.

Blood transfusion 1900 Karl Rand discovered human blood type, which made blood transfusion possible.

Cloning technology 1997, British scientists successfully bred cloned sheep "Dolly".

Before that, the only shortcoming of all imaginative creations of human beings was that "people can't make them".

People ",so humans have long attributed this most magical manufacturing to being invisible and intangible.

The mysterious power of. The birth of cloning technology broke the last myth of the 20th century.

In addition to some important inventions mentioned above, two other great achievements of mankind in this century have also

Go down in history:

Another great achievement of the United Nations in this century is that mankind has found the road to peace.

As a result of the bloody lessons of the two world wars, the United Nations came into being. We are already in the tide.

This role has been seen in the black war, the Cambodian civil war and the Middle East peace talks.

In the past, many international disputes about world trade were mostly for the price of resources and war.

It is often too expensive to buy. International trade enables global resources to flow freely in a peaceful state.

Exchange, the flow and distribution of resources can be achieved through tariff and non-tariff negotiations, which is necessary for war.

Minimize the importance. In the case of rapid economic development and shortage of resources, 50 years

No war is a great achievement: laser technology: expanding the new field of scientific research

1960, Mayman successfully developed the world's first practical ruby laser. It marks the birth of laser technology.

In recent years, the development speed of laser technology is amazing, and its application scope is constantly expanding, such as laser preservation, laser breeding, laser medical treatment, laser beauty, etc., which has become a hot field for scientific and technological personnel to study.

People used to rack their brains to keep vegetables fresh at room temperature, but now the laser has easily solved this problem. For example, long-distance transport of vegetables, laser scanning once before delivery is enough, and it is still fresh as usual on the road for more than ten days and eight days. The principle is simple. When the laser energy is high, the growth of vegetables is inhibited. On the contrary, its energy is suitable for its growth conditions, so laser breeding is popular again. Laser irradiation of seeds can cause variation of crop characters and increase crop yield.

Cars: keep pace with the times.

Cars have changed the whole traffic situation of human beings, and they have become the symbol of every industrial power.

Cars have gone through such a history: 177 1 year, France Lianzhu designed a steam engine tricycle; 1860, French Renault made a car engine with gas as fuel; 1885, Ben Ci and Daimler completed the locomotive of high-speed gasoline engine and the tricycle of two-stroke gasoline engine respectively, and successfully commercialized them. 1908, Ford of the United States mass-produced Model T cars with assembly lines, with low price, high safety performance and high speed. Cars began to spread; 19 12 years, Cadillac launched an electronic ignition starter to make women fall in love with cars. 1926, Daimler Ben Ci, the world's first automobile manufacturing company, was established; 1934, the first front-wheel drive car came out; 1940, many automobile manufacturers stopped production because of the war, and European automobile manufacturers began to turn to the production of military vehicles; In 1950s, Volvo's caravans in Germany became the most popular cars as soon as they were launched. 1970-2000, Japanese cars were popular in Asia, and ultra-high-tech small cars from Toyota, Honda, Mitsubishi and Nissan invaded the European and American markets, rewriting the monopoly of European and American brands.

In fact, the invention of the automobile greatly improved the mobility of human beings, and broadened their horizons and pursued freedom in the 20th century. (Excerpted from Mu Qing)

Mobile phone: the dream of wireless communication

1973 realized the dream of wireless communication in new york, USA. At that time, the first practical mobile phone in the world was large and weighed 1.9 kg, which was a veritable "mobile phone". Today, 26 years later, the world's smallest mobile phone was born. It is only as big as a pager and much lighter than the first generation of mobile phones.

Satellite Broadcasting: Let the Media Spread at Zero Distance

1964 is another important turning point in the history of human communication. This summer, thousands of viewers around the world watched the live broadcast of the Tokyo Olympic Games in Japan via satellite for the first time. This is the first time in human history to watch things happening thousands of miles away through TV screens at the same time. People not only lamented the spectacular opening ceremony and various competitions of the Olympic Games, but also marveled at the progress of science and technology. All this is due to the geosynchronous satellite invented by harold rosen.

Internet: Another Way of Emotional Communication

1in the summer of 969, the embryonic form of the internet appeared in the United States. It consists of four computer websites, one in the University of California and the other three in Nevada. 1972, the experimenter sent the first email on the experimental network for the first time, which marked the beginning of the combination of internet and communication. In the 1990s, the Internet began to be used for commercial purposes. 1995 ushered in the first climax of network development, known as the International Internet Year. Driven by the wave of e-commerce, the Internet will have a far-reaching impact on human society in the 2 1 century. Agree 1| Comment 201-12-913: 22 myrrh Langzhong | Grade II

1960, Mayman successfully developed the world's first practical ruby laser. It marks the birth of laser technology.

In recent years, the development speed of laser technology is amazing, and its application scope is constantly expanding, such as laser preservation, laser breeding, laser medical treatment, laser beauty, etc., which has become a hot field for scientific and technological personnel to study.

People used to rack their brains to keep vegetables fresh at room temperature, but now the laser has easily solved this problem. For example, long-distance transport of vegetables, laser scanning once before delivery is enough, and it is still fresh as usual on the road for more than ten days and eight days. The principle is simple. When the laser energy is high, the growth of vegetables is inhibited. On the contrary, its energy is suitable for its growth conditions, so laser breeding is popular again. Laser irradiation of seeds can cause variation of crop characters and increase crop yield. Agree with 1| Comment 201-12-1017: 49 Enthusiastic users.

Vitamins, X-rays and lasers were discovered, the Internet, mobile phones, air conditioners, washing machines and televisions were invented, and hybrid rice was cultivated. Agree with 0| Comment 2011-12-1120: 24 Enthusiastic users.

Great inventions that influenced mankind in the 20th century.

Steam engine: promoted the development of the whole industrial revolution.

Traditional horsepower or water power cannot provide the power needed for industrial revolution, and the development of steam engine energy has brought more effective and powerful power to the world. Although the ancients began to explore this aspect in the 2nd century BC, it was not until Watt's steam engine was put on the market that the commercial value of the steam engine was really opened. Many historians believe that the development of the steam engine is one of the most important inventions of the industrial revolution, because the appearance of the steam engine promoted the development of metallurgy, coal mines and textiles. The appearance of steam engine and the mechanization of textile industry increased the iron consumption of industry. Because Britain is rich in iron ore and coal mines, the increase in demand has stimulated the improvement of iron smelting technology and coal mining industry and accelerated the pace of industrialization. 1804 steam engine train and 1807 steam engine boat greatly improved the transportation conditions and assisted the development of the industrial revolution.

Telephone: Opening a New Chapter in the History of Human Communication

"Mr. Watson, please come at once. I need help!" This is the first sentence that alexander bell, the inventor of the telephone, successfully transmitted by telephone on March 1876. Since then, the telephone was born, and the history of human communication has opened a new chapter.

1973 realized the dream of wireless communication in new york, USA. At that time, the first practical mobile phone in the world was large and weighed 1.9 kg, which was a veritable "mobile phone". Today, 26 years later, the world's smallest mobile phone was born. It is only as big as a pager and much lighter than the first generation of mobile phones.

1964 is another important turning point in the history of human communication. This summer, thousands of viewers around the world watched the live broadcast of the Tokyo Olympic Games in Japan via satellite for the first time. This is the first time in human history to watch things happening thousands of miles away through TV screens at the same time. People not only lamented the spectacular opening ceremony and various competitions of the Olympic Games, but also marveled at the progress of science and technology. All this is due to the geosynchronous satellite invented by harold rosen.

1in the summer of 969, the embryonic form of the internet appeared in the United States. It consists of four computer websites, one in the University of California and the other three in Nevada. 1972, the experimenter sent the first email on the experimental network for the first time, which marked the beginning of the combination of internet and communication. In the 1990s, the Internet began to be used for commercial purposes. 1995 ushered in the first climax of network development, known as the International Internet Year. Driven by the wave of e-commerce, the Internet will have a far-reaching impact on human society in the 2 1 century.

Cars: keep pace with the times.

Cars have changed the whole traffic situation of human beings, and they have become the symbol of every industrial power.

Cars have gone through such a history: 177 1 year, France Lianzhu designed a steam engine tricycle; 1860, French Renault made a car engine with gas as fuel; 1885, Ben Ci and Daimler completed the locomotive of high-speed gasoline engine and the tricycle of two-stroke gasoline engine respectively, and successfully commercialized them. 1908, Ford of the United States mass-produced Model T cars with assembly lines, with low price, high safety performance and high speed. Cars began to spread; 19 12 years, Cadillac launched an electronic ignition starter to make women fall in love with cars. 1926, Daimler Ben Ci, the world's first automobile manufacturing company, was established; 1934, the first front-wheel drive car came out; 1940, many automobile manufacturers stopped production because of the war, and European automobile manufacturers began to turn to the production of military vehicles; In 1950s, Volvo's caravans in Germany became the most popular cars as soon as they were launched. 1970-2000, Japanese cars were popular in Asia, and ultra-high-tech small cars from Toyota, Honda, Mitsubishi and Nissan invaded the European and American markets, rewriting the monopoly of European and American brands.

In fact, the invention of the automobile greatly improved the mobility of human beings, and broadened their horizons and pursued freedom in the 20th century. Of course, the development of the automobile industry has also brought about problems such as land resources occupied by the road network, air pollution, high ticket prices, etc. But in any case, the automobile is indeed leading human beings forward and running forward.

Television: the "devil" created by human beings themselves

Modern people can eat and drink for a day, but they can't watch TV for a day.

The idea and theory of TV appeared as early as 1870. 1884, German inventor Paul? Pukov designed a "scanning disk" with holes. When the disk rotates, these holes divide the scene into small points, which are then converted into electrical signals, and the receiver at the other end recombines the signals into the same but rough image as the original image. 1926, the scot John Beaumond made a camera with Pukov's "big disc".

It was Rakimir Zokin, who immigrated from Russia to the United States, and Philo farnsworth, who was born in Utah, who really made TV with stable pictures. 1939 Expo, the world's first truly clear television broadcast, television was really born.

A big step in the history of human space.

American astronaut Armstrong famously said when he landed on the moon, "For an individual, this is just a small step; For mankind, this is "a big step firmly in the hearts of people on earth." "

1969 At 4 o'clock on July 20th, 500 million TV viewers around the world saw a "black" picture, and a voice from outer space came from the depths of the picture: "Houston, this is Jinghai base, and the eagle cabin has landed!" Next, Armstrong and Aldrin, two astronauts on the Apollo 1 1 spacecraft in the United States, asked the Houston Space Center, "We don't want to rest for four hours, we want to land on the moon immediately." Houston replied: "Agree to land on the moon immediately!" Then Armstrong turned his back outward and began to climb down the ninth ladder slowly. 500 million people around the world have seen this scene.

Landing on the moon is indeed a great progress in human space science and technology, because as Colonel Cernan, the last man to land on the moon, said, "Looking at the earth from the moon, I can't see any national boundaries. I think the earth is a whole, and my whole heart will be open. "

Computer: the hope of the future of mankind

1On February 4th, 946, representatives of the US military, government departments and famous scientists crowded together in a room at the University of Pennsylvania. When an army general gently pressed the button, the machine that occupied the whole three walls immediately lit up, and people applauded warmly and cheered loudly: "Eniak is alive!" " "Congratulations to Chief Engineer Arcot." ENIAC "is the first computer in the world.

Gene: The Eternal Password to Solve Life

10 years ago, the scientific community predicted that 2 1 century would be the century of genetic engineering. What is the main course of human genetic engineering? 1866, Austrian geneticist Father Mendel discovered the genetic law of living things. 1868, Swiss biologist Friedrich discovered that the nucleus has two parts: acidity and protein. The acidic part was later called DNA；; 1882, when German embryologist Walter Fleming was studying salamander cells, he found that the nucleus contained a large number of divided linear objects, that is, later chromosomes. 1944, American researchers proved that DNA is the genetic material of most organisms, not protein; 1953, American biochemist Watson and British physicist Crick announced the discovery of the double helix of DNA, which laid the foundation of genetic engineering. 1980, the first transgenic mouse was born; 1996, the first cloned sheep was born; 1999, American scientists cracked the sequence map of the 22nd human genome. The future plan is to prescribe drugs for related diseases according to the genetic map.