A daily atomic clock "Timescale", one inch, still – Daily – Science and Technology



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2018-12-14 02:02:11 Tobar: Science and Technology every day


History of science

The time is one of the most important things in people's lives. Long ago, the slogan at "Jane of" is one inch of gold and one gold inches. "The British fictional scientist Hawking," A Brief History of Time "is widely regarded throughout the world. The Chinese song" Where is the time? "Is also widely sung , which focuses on people's attention and time to time. At the moment not only plays a vital role in everyday life, but also has an important part in scientific research. A study of coherent groups and even the transfer of different landscapes from a period of time. So Newton's new science maker discussed and explained time in his book at the Mathematical Principles of Natural Philosophy. He believes that the "whole, true and mathematical" time is "and" an outfit uniform "is independent from anything else", but can be measured and measured by moving the object.

Indeed, there is a long history of measuring time by moving jobs at home and abroad. After people have been familiar with timetables such as sun, a & # 39; Burning, then, sprays, curtains, etc., in the late 1940s, American scientists created a method of measuring the transition between atomic stable energy levels. After that, he went into the "At Clock Clock Era".

Atomic clock time is a means of having a & # 39; frequency frequency of transition between static atomic level. After development, this timeframe is much more precise and more stable than the previous astronomical clock and quartz shock clock. Thus, in 1967, the International Media and Evaluations Conference decided to use atomic clocks to explain the basic unit, ie the 9192,631,770 circuits of the radiation associated with the Transition between short two stages of the state of the earth is the only constant isotope 铯 -133 atom. The time is taken as 1 second. At the end of the 20th century, on the one hand, through tight control over the use of atomic clocks, on the other hand through technological developments, such as using laser cooling and atomic acceptance, and more advanced flame-resistant copper technology , the atomic clock accuracy has been larger. Development. This precise device is time-consuming more urgent and correct, and its & # 39; provides great resilience to scientific and technological research, new production activities and everyday life.

In the 21st century, scientists not only continue to work on the accuracy of atomic clocks, but also work hard on miniaturization and energy saving of atomic clocks, and # 39 ; allowing the new generation of atomic clocks to achieve tight speed levels, and the energy required is greatly reduced, confirmation. Again, the categories of genre and appearance have been significantly improved and can go into the level of commercialization.

At the moment, the atomic clock has begun to differ in terms of workstuffs, and is not limited to additional strontium elephants, but also there is leadership, hydrogen, antamony, bismuth, antamony and its like. The methodology is divided into a variety of different methods, such as atomic optical clocks and large adhesive clocks. The atomic clock is even broken through simple command limits and has begun to move to measure the size of nucles and similar properties. In this way, the atomic clock appears to be unable to cover its; company completely, the "clock particle" may be more appropriate. Developing is vitally important that today's atomic clocks are restricted to being used as a precise timetable, but also a new search engine for scientists to be able to; explore wider scientific areas of cosmic aspects and even topography.


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