1945 In August, the Dora box that destroyed the earth was opened in Hiroshima and Nagasaki, Japan. At that time, international powers were bent on overwhelming each other with this powerful and deadly destructive weapon. The United States successfully conducted its first test explosion in New Mexico in July, 1945, followed by the Soviet Union, 1949, Britain 1952, France 1960 and China 1964.
2. Space shuttle
1959, the Soviet unmanned spacecraft successfully landed on the moon for the first time and took a lot of photos. The feat of Apollo landing on the moon in the United States in the late 1960s was the first step for mankind to set foot on a planet other than Earth. Since then, the United States has gradually left the Soviet Union behind in space exploration. After the appearance of the space shuttle, the chances of human success in going to outer space have greatly increased. Scientists predict that mankind will travel to outer space after 2000.
Step 3: TV set
1923, the soul of television CRT was born. Television technology was widely used in the 1940s, and 1954 ushered in the era of color television. After the 1960s, almost all countries established TV stations. This square box has created countless happy times for mankind.
4. artificial satellite
The first artificial satellite was successfully tested by the Soviet Union on 1 October 4th 1957, followed by the American explorer 1 on1October 4th 1958,1. Since then, more and more artificial satellites have floated out of the atmosphere. Satellites were originally used in military science and technology, and gradually evolved into a family of satellites with different purposes such as communication, mapping, detection and meteorology.
Aspirin
As early as the15th century, Greek doctors used the powder ground from willow bark as the ancestor of the herbal medicine aspirin. By the end of this century, this formula for relieving physical pain has received unprecedented attention. The trademark "aspirin" founded by Bayer Pharmaceuticals in Germany has become a proper synonym for this prescription. In the increasingly busy modern society of the 20th century, this white round pill of aspirin has played an indispensable role.
6. Civil airliners
In modern life, the necessary means of transportation for international travel-airplanes-are mostly commercial passenger planes converted from military transport planes. 1949 the first commercial airliner with 36 passengers flew over Europe, turning a new page in the civil aviation century. Nowadays, the demand for air travel in the transportation market is increasing, and civil airliners have become one of people's convenient means of transportation.
7. Personal computers
The third revolution of computer completely changed the way people work and think. In the late 1970s, computer manufacturers began to develop smaller personal computers, and in the early 1980s, popular computer consumer products appeared on the market. Personal computers have accelerated the pace of social digitalization, and almost every level of society is completely infected by computers. No one can refuse computers to enter people's lives.
8. Mobile phones
The "big brother", once the exclusive equipment of big brother in hero movies, has become a private way of communication when people are outdoors. The development of global economy makes mobile communication one of the hottest industries in recent years. The convenience of mobile communication anytime and anywhere has also changed the traditional way of communication between people.
9. cloned sheep
1At the beginning of 997, British scientists successfully gave birth to a lamb without a father. This pioneering work shows that it will soon be possible for human beings to create life by means other than natural means. Cloning sheep is undoubtedly an unprecedented step in biotechnology, but it involves the level of human moral concept, but it is a difficult problem that science can't sort out.
10 Internet
The most primitive computer network, at first, only connected different computer hosts in the research room of the college. When this technology can be used by people simply by connecting modems and telephone lines, the network immediately became the most influential invention at the end of this century. The new information dissemination mode created by the network has rapidly affected more and more levels. E-mail, online shopping and online dating have redefined the network. People can connect the whole world in their hands with a thin telephone line.
Shi Jin Feng Liege Wei Zaokong's philosophy, beauty, beauty and discipline.