Date: 6 months ago   Category: Hi-Tech

The most exact are presented optical hours for today


People have some insuperable thirst for exact definition of time. The expensive watch of famous brands is famous for ultraprecise mechanisms which give the minimum error. But in science nevertheless accuracy matters and, as a rule, for the most exact measurements the atomic clock is used. But there are also more exotic variations of the last. For example, hours optical.

Behind development of the most exact today optical hours is stood by group of researchers of the University of Adelaide in common with experts of Cryoclock. For her scientists have even got the award Eureka Prizes founded by the museum of the same name for achievements in the field of new researches and an innovation. Hours have received the name the Cryogenic sapphire oscillator (Cryogenic Sapphire Oscillator).

In the "classical" atomic clock as a measure of counting is used the repeating event which caesium atom fluctuations are. New hours are arranged as follows: the sapphire resonator of hours is cooled up to the ultralow temperature then begins to let out a slaboulovimy signal with the minimum level of extraneous noises. This signal is also used as "reference system". "Purity" of a signal from extraneous noises gives the chance very precisely to count time. And, according to scientists, they are mistaken no more, than for 1 second in 40 million years. The project manager professor Andre Lyuten has told about application of hours, "The highest accuracy of sapphire hours provides the huge potential for modernization of the defensive radar Jindalee Over-The-Horizon Radar Network system (JORN) which controls airspace of Australia. But besides JORN there is also a peaceful use of technology. For example, hours can provide stabler signal for the systems of tracking space. High precision will give the chance to trace small objects at long distances." This and other news you can discuss in our official Telegram chat.

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