The amazing discoveries and inventions of the 20th century

Atoms In 1900, the German scientist Max Planck discovered that when atoms fission, they would release huge amounts of energy. He called this energy "quart". The discovery was hailed as the discovery of the century.

Stainless Steel Before 1903, steel was not only prone to rust, but also prone to corrosion. From 1903 to 1912, stainless steel became an outstanding industrial metal as soon as it appeared. Nowadays, stainless steel is not only used in industry, but also widely used in medical treatment and human body.

Before air conditioning, Chinese emperors used mountain ice to cool down in summer. In 1911, American W.

Invented air conditioning, and man began to conquer the sky.

Aspirin In 1897, the German Felix Hofmann synthesized acetylsalicylic acid. Two years later, the trade name was registered as aspirin. A century later, it became the most popular drug. drug.

Automobile In 1913, the American automobile manufacturer Henry Ford officially launched his automobile assembly line.

The assembly line reduced costs and improved efficiency, bringing automobiles into the homes of ordinary people and becoming a

A major event with a decisive impact in this century.

Aircraft On August 14, 1901, the first powered aircraft began to fly. In 1933, the world's first regular air route was opened, which greatly expanded the space for human activities.

Electric light 1913. After the tungsten filament was patented, electric lights began to shine.

Fax was first transmitted in 1902, and its use in business began in 1926.

Movies became a form of entertainment on December 28, 1895. The earliest popular sound film "The Jazz Singer" was released in New York in October 1927, becoming the first The first color film "Vanity City" was released simultaneously in the United Kingdom and the United States in 1935, and the first wide-screen film came out in 1953.

Copier: In 1907, the world's earliest photocopier appeared in New York, USA.

In 1959, after the Xerox 914 electrostatic copier was launched, copiers began to be widely used.

Color Photos The principle of color photography has been around since the last century, but it was not until the 1940s that the first batch of color films were produced. Color photos have gone through a long period of time. Road of the century.

Television has a very high per capita ownership of television in the world today (every 10 people own one on average)

It started in 1927 and was made by Americans.

The Internet invented in this century is the world's largest computer network composed of many interconnected networks.

Together with television, world news that happens every day is spread to the earth in a timely manner. Every corner of

has opened the curtain of the information age.

Laser The first laser was born in 1960.

Contact lenses were invented as glasses in the Middle Ages. It was not until the emergence of contact lenses in 1945 that substantial progress was made. In 1964, soft contact lenses were invented.

The heartbeat recorder was invented by the Swede Oak Senning in 1958 and began to be used in the 1960s. To date, it has saved countless lives.

The development of electronic computers began during World War II, and the first computer similar to today's electronic computers was built in 1943.

Penicillin was first developed by British Fleming in 1929 and used in 1941 for injured soldiers in World War II. It is known as the invention second only to the atomic bomb. .

Contraceptive pills In 1959, the contraceptive pill was developed, and humans began to control their own birth rate.

Plastics that did not exist before this century have become indispensable in our century.

It began with the invention of phenolic plastics by American L. Baekeland in 1909. Production method.

Radar Since 1935, people have begun to use extremely short radio waves to determine long-distance or

invisible targets.

Radio In 1901, Italian Marconi successfully conducted the first radio communication.

In 1948, the semiconductor radio was invented.

X-rays, which existed in 1895, were not used in medical treatment until the first decade of this century, and they

displayed their huge power.

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

The watch is one of the inventions that has changed more times in human history. It is the most comfortable watch to wear.

The watch appeared in 1904.

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

prolonged the lives of countless patients with renal failure.

Robot In 1983, Volkswagen AG in Wolfsburg, Federal Republic of Germany manufactured and produced the first robot.

Man-made satellite On October 4, 1957, the first man-made satellite launched by the former Soviet Union ushered in the era of human spaceflight.

Credit Cards In the history of money, the emergence of credit cards is the biggest revolution since the emergence of currency. The first credit cards were issued in the 1920s, and the most commonly used credit cards were issued in 1950.

Blood transfusion In 1900, Carl Rand discovered human blood types and made blood transfusion possible.

Cloning Technology In 1997, British scientists successfully created the cloned sheep "Dolly".

Before this, among all the imaginative creations of mankind, the only shortcoming was that "man cannot create man

man", so mankind has long attributed this most miraculous creation to To the invisible and intangible

mysterious power. The birth of cloning technology began to disintegrate the last myth of the 20th century.

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

will go down in history:

The greatest United Nations invention of this century Another achievement is that mankind has found a path to peace. Due to the bloody lessons of the two world wars, the United Nations came into being. We have seen this effect in the Bosnian War, the Cambodian Civil War, and the Middle East peace talks.

Many international disputes in world trade in the past were mostly about competition for resources, and the cost of war

was often so expensive that the gains outweighed the losses. International trade allows global resources to be exchanged freely in a peaceful state. The flow and distribution of resources can be obtained through tariff and non-tariff negotiations, and the necessity of war is reduced to Minimum extent. In the context of rapid economic development and resource shortages, the fact that there has been no war for 50 years is a great achievement.