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Category: Science and Technology

Where’s Time Come From?(IV)

In terms of basic physics, is there any particularly new discovery about time?

We always expect colleagues who are doing experiments to improve the measurement of time. At some stage, the measurement will become good enough, and we will undoubtedly see some strange phenomena appear. There is also a prominent fundamental problem that although the laws of physics are symmetrical in most cases, under some situations, a set of processes must be related to weak interactions, at this time there will be a small number of obvious underlying crashes in the symmetry of time. This process seems to play an important role and is integrated into the vast universe of puzzles. We think that some things are still playing a role. Therefore, more experiments are needed in the field of particle physics, perhaps to solve the asymmetry problem of this time reversal.

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The Deepest Submarine Tunnel in China

The Cross-Harbour Tunnel is not common, it may appear on the road or railway. It may also appear at the end of the cross-sea bridge. The China’s first deep sea tunnel is a bit special because the tunnel is created by the subway, and now it is finally a surprise for many people. It also brings a lot of convenience to the people in this city. After all, this is a city with a strait. With this subway, it can naturally make people more convenient to reach the other side of the city.

After more than three years of construction, the deepest submarine tunnel in China- the Qingdao Metro Line 1 undersea tunnel, was successfully completed, which is also the longest subway undersea tunnel built in China.

Shortly after the last blast, the Qingdao Metro Tunnel Line 1 penetrated more than 80 meters deep under the sea. The length of the submarine tunnel of Qingdao Metro Line 1 is 8.1 kilometers, of which the length of the Jiaozhou Bay is 3.49 kilometers. The maximum depth of the seabed is 88 meters. It is the deepest submarine tunnel in China.

Hu Hongxing, project manager of Qingdao Metro Line 1 of China Railway Third Bureau: Our submarine buried layer is 88 meters, and the pressure per square meter is equivalent to 300 cars (the weight), so the pressure is great.

At the same time, the submarine tunnel of Qingdao Metro Line 1 has passed through 18 fault-fracture zones, and the stratum is complex and variable. The risk and danger of water inrush under the great pressure of seawater is extremely great.

Yin Xianfeng, senior engineer of Qingdao Metro Line 1 Construction Command: These 18 faults are connected with seawater. During the construction process, we adopt precise geological identification, such as CT and PETCT accurate diagnosis to take effective targeted measures to prevent risks.

The builder adopts comprehensive advanced geological prediction technology, advanced mechanized grouting and water blocking to prevent tunnel collapse and water inrush. At the same time, a set of hard rock subsea tunnel informatization rapid reinforcement water blocking technology, which adopts more than ten domestic subway tunnel construction. New materials and new technologies effectively reduce construction risks and seawater leakage.

The total length of Qingdao Metro Line 1 is about 60 kilometers. It passes through Huangdao Bus Station, Qingdao Railway Station, North Railway Station, Liuting International Airport, North Bus Station and other important transportation hubs. It is a fast-track transportation corridor that runs through the north and south of Qingdao. Line 1 can be interchanged with 11 lines in the Qingdao track network and is expected to open in 2020. On the basis of the original Jiaozhou Bay Tunnel and the cross-sea bridge connecting channel, Qingdao Metro Line 1 has added an important traffic artery connecting Qingdao West Coast New District and the main urban area, can promote the development of the east and west coasts.

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About Science and Technology

Biotechnology

Biotechnology, the unprecedented development in the 20th century, especially the discovery of DNA double helix structure and the implementation of the human genome project, make biotechnology become the mainstream of 21st century high-tech. Because biotechnology can reveal the secrets of biological structure and inheritance, it has a significant role in promoting the development of population and health, agricultural high-tech, ecological environment, food and chemical industries, thus has broad prospects for development.

Space technology

Space technology is a comprehensive engineering technique for exploring, developing and utilizing space outside the Earth. Human beings enter the space, carry out scientific research there, develop unlimited space resources, settle and travel, thus establish space civilization, which has always been a human dream. Realizing this dream will depend on the advancement of space technology. In the past half century, with the development of space technology and the wide application of various application satellites, human beings have created unprecedented new space in satellite communications, satellite broadcasting, satellite meteorology, satellite navigation, satellite surveying, space science, and military applications. The development of technology has played a role that cannot be achieved by traditional methods for radio and television, long-distance communication, weather forecasting, resource census, navigation and positioning, agricultural production, rescue and disaster relief, environmental monitoring and scientific research.

Philosophy

It is the doctrine about the world view, the system of people’s fundamental views on the whole world including nature, society and thinking. It is the highest summarization and summary of natural knowledge and social knowledge.

Natural science

Mathematics: The research object of mathematics is the quantitative relationship and spatial form the real world.

Physics: Physics is the general term for the natural sciences. Since matter and energy are the basic components of nature, physics is the science of studying the material structure and energy changes in nature.

Chemistry: A natural science that studies the nature, composition, and structure of various specific materials, as well as the reactions and changes that occur under specific conditions.

Astronomy: Astronomy is the science that studies the movement and nature of celestial bodies. Broadly speaking, it studies the material structure and energy changes of the universe.

Geoscience: Geoscience is the abbreviation of geography, including geography and geology.

Biology: The science of studying the production, development, and regularity of living matter.

Medicine: Science that studies and protects human health, prevents and treats diseases.

Agricultural Science: Agricultural Science is the science of studying agricultural production theory and technology

Etc,.

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Technology Changes Our Life (I)

The essence of technology is make our life better. Recent two years, there are so many new technology come into our life.

  1. Paying with your face

We are all interest in this smartphone that was published not long ago- iphoneX. The most interesting point is the face recognition technology it brings. The role of the face ID can be used not only to unlock the phone, but more importantly as a way to securely authenticate when paying. In addition to Apple Pay, Alipay and WeChat payment have already supported face ID. In the Alipay, WeChat payment and UnionPay platforms, from the small shops to Starbucks under the office building and even overseas duty-free shops, it is becoming more and more popular to go out without a wallet.

Mobile payment and the rise of face recognition technology are also rely on the bank’s technical support. Taking Guangfa Card as an example, Guangfa Cardless Paying Brand has covered the mainstream payment methods in the market such as, Apple Pay, Samsung Pay, Huawei Pay, Mi Pay, HCE, Swatch Pay, Alipay and WeChat Pay. The so-called “mobile phone is a credit card.” Now brush your phone to pay is unnoticed, they also launched a smart bracelet called “G-Force”, which can wave your hand to payment, it also can be used as a traffic card, and health monitoring function. It was really popular with young people.

  1. Wireless charging

Although wireless charging technology has been appeared for more than a decade, it is truly familiar to the public, and it has been a matter of the past few years. After Samsung, Microsoft, Nokia and other brands have released mobile phones that support wireless charging, Apple’s wireless charging function has finally come out in a long-awaited way. This is also a highlight of this year’s iPhone 8/8 Plus and iPhone X.

Get rid of the data line, in fact, it is the charging method that best suits our usage habits, because you can completely abandon the data line, the phone will start charging when you put it on the table, you can pick it up at any time, you don’t have to find your data line to plug in the phone when you sleepy. Charging boards such as Apple’s airpower are also keeping the desktop clean and tidy, but also solve the problem of insufficient charging interface, so that we can kill two birds with one stone.

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