1945 In August, the Dora box that planted the earth was destroyed in Hiroshima and Nagasaki. As soon as it opened, international forces concentrated on this very powerful weapon and overwhelmed the fatal wound of the other side. The United States successfully exploded in New Mexico 1945 in July, followed by the Soviet Union 1949, Britain 1952, France 1960 and China 1964.
2. Shuttle bus
1959 Soviet unmanned spacecraft successfully landed on the moon for the first time and took back many photos. The United States was a feat of Apollo in the late 1960s, but it was the first step on a planet other than Earth. Since then, the United States will gradually lag behind the Soviet Union in space exploration. After the space shuttle, the probability of success greatly increased the possibility of human beings entering outer space. Scientists predict that human space travel will be realized after 2000.
Step 3: TV set
1923, the soul of TV-CRT was born. Television technology was widely used in the 1940s, and the color TV era first appeared in 1954. Nearly 60 years after the establishment of TV stations in most countries. In the square box, countless happy times have been created for mankind.
4.
The first man-made satellite Putnik was successfully tested by the Soviet Union on June 4, 1957, followed by American explorers 1, 1958, 65438+1October 3 1, and then more and more satellites floated into the atmosphere with the earth. Satellite technology was first used in military affairs, and then gradually evolved into a series of communication, graphics, detection and meteorological satellites for different purposes.
Aspirin
The herbal version of aspirin was ground with willow bark powder by the ancestors of Greek doctors as early as15th century. By the end of this century, this recipe has received unprecedented attention in relieving physical pain. Bayer Pharmaceutical Company founded the trademark "Aspirin", which became the prescription of the increasingly busy modern society in the 20th century. Aspirin, a white round pill, plays an indispensable role.
6. passenger plane
Aircraft and commercial passenger planes, which are indispensable means of transportation for modern international tourism, are mostly improved military transport planes. 1949 the first commercial passenger aircraft carrier with 36 passengers flew to all parts of Europe, opening a new page in the aviation industry. Nowadays, with the increasing demand for air travel in the transportation market, passenger planes have become a means of transportation.
The third revolution of 7 PC enterprise directory turned off computers in a convenient way, which completely changed people's working methods and forms. In the late 1970s, people began to develop computer manufacturers with smaller personal computers. In the early 1980s, consumer products using computers became popular in the market. PC accelerates the pace of digital society, and almost every aspect of society is completely infected with computers. No one can refuse to enter the computer field.
8. Mobile phone
My brother used to be the "big brother" of the exclusive movie Hero, but now it has become an outdoor activity for private communication. Global economic integration, so in recent years, mobile communication has become one of the hottest industries. The convenience of contacting the telephone anytime and anywhere has also changed the traditional way of communication between people.
9. cloned sheep
1at the beginning of 997, British scientists successfully made a sheep without a father, which showed that human beings could produce in a natural way other than life. Cloning sheep is undoubtedly an unprecedented progress in biotechnology, but it involves the moral level of human beings. However, science cannot solve these problems.
10 Internet
The most primitive computer network is only in universities, and the technology is only connected by a simple modem and telephone line, which can be used to connect different computer rooms. The Internet has instantly become the most influential invention century. The new mode of network creation will soon affect the dissemination of information on more and more levels. E-mail, online shopping and online dating have redefined the modeling network. One needs a thin telephone line, and you can be in the hands of the world series.