Examples of the benefits of scientific and technological development

On June 5438+February 2 1 day, 2000, the second Beidou navigation test satellite developed by China was successfully launched. Together with the first Beidou navigation test satellite launched by 5438+1October 3 1 in June 2000, the Beidou navigation system is formed.

This indicates that China will have the first-generation satellite navigation and positioning system independently developed. After the system is completed, it will mainly provide navigation services for highway traffic, railway transportation and offshore operations, and will play a positive role in China's national economic construction.

20011China's self-developed Shenzhou II was launched from Jiuquan Satellite Launch Center in China and successfully entered the scheduled orbit. On June 65438+1October16th, the "Shenzhou II" unmanned spacecraft returned accurately and landed successfully. This is the first launch of China space flight in the new century and the second flight test of China's manned spaceflight project, which marks an important step for China to realize manned flight.

2. Magic computer magician

When the New Year came in 2000, a primary school student in Beijing made a colorful e-mail with a multimedia computer and sent it to his cousin in the United States, teaching her to learn to sing "Come home often".

Originally, such works could only be done by audio-visual companies, but now with the continuous development of science and technology, such complex "crafts" can also be done at home, because of the multimedia computer.

A primary school student not only writes lyrics and songs on the computer, but also records his voice on the computer through multimedia recording technology. In order to make cousin interested in learning to sing, she painted many touching scenes of family reunion. Finally, she sent it to her distant cousin through the "information superhighway". Multimedia computer, what a magical magician.

3. Generator

1866, Siemens of Germany invented the self-excited DC generator; 1870, Belgium made a ring armature and invented a ring armature generator. This kind of generator uses water power to turn the rotor of the generator. After repeated improvement, the output power of 3.2KW is obtained at 1875.

So electrical appliances began to be used to replace machines and become a new energy source to supplement and replace steam engines.

4. Internal combustion engine

From 65438 to 1970s and 1980s, internal combustion engines fueled by gas and gasoline were born one after another, and diesel engines were built successfully in 1990s. The invention of the internal combustion engine solved the engine problem of the vehicle.

In 1980s, German karl friedrich Benz and others successfully manufactured cars driven by internal combustion engines, and internal combustion engines, ocean-going ships and airplanes also developed rapidly. The invention of internal combustion engine promoted the development of petroleum exploitation industry and petrochemical industry.

6. Textile machinery

1765, the weaver Hargreaves invented the "Jenny Loom", which triggered a chain reaction of the invention of machines and technical innovation in the cotton textile industry for the first time, and started the industrial revolution.

Since then, advanced machines such as screw machine and hydraulic loom have appeared in cotton textile industry. Soon, in many industrial sectors, such as coal mining and metallurgy, there was also machine production. With the increasing output of machines, the original power such as electricity storage, water power and wind power can no longer meet the needs.

Extended data:

function

economic development

China's labor productivity is only 1/40 of that of developed countries. Once science and technology are transformed into productive forces, it will greatly improve production efficiency, thus promoting rapid economic development, and its role greatly exceeds the transformation of the economy by capital and labor.

Military combat effectiveness

In today's world, peace and development are the themes of the times. However, the "cold war" mentality still exists, and hegemonism and power politics are still the main sources that threaten world peace and stability. It is the same choice for a powerful country in science and technology to become a modern country.

Political influence

The level of modern science and technology has become a bargaining chip in international political struggle and a symbol of great power status. Deng Xiaoping once pointed out: "If China had no atomic bombs, hydrogen bombs and satellites since the 1960s, China would not have become a big country with more important influence, nor would it have such an international status."

social progress

The productivity of scientific and technological development has created a highly developed material civilization, but the improper use of science and technology has caused extremely serious environmental problems around the world.

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