report according to 《Times 》 in England, the scientists have already successfully developed currently the laser clock of new generation, this kind of clock accounts very precise, almost can't produce an error margin in 2,000,000,000 years.This kind of accounts up to the present the most precise laser clock can be applied to satellite to navigate in the future, it the accuracy can keep at one meter while tracking ambulation target in the ground in.
the scientists design the new clock of manufacturing uses laser as to measure a reference, can make an error margin for 2,000,000,000 years not more than 1.In the future, this kind of new clock can extensively apply in navigating the satellite of ground, will make car automatically the driver make possible.After the technique applies maturity, even can carry out the unmanned driver's airplane precise land.After obtaining the above-mentioned achievement, the United States, England, Germany, France and Japan etc. several scientists of nations still prepare to study realm to continue to launch a contest here, so that they can design to make more precise clock.Their target be clock of time is precise to arrive from 13,700,000,000 year ago cosmoses massively exploded cent second isn't bad.The scientists believe that this kind of clock inside the decade will definitely carry out.This kind of new clock is to adopt laser to measure to vibrate frequency with synchronous atom, therefore they are usually called optical clock.Pass this technique, the clock will be able to be divided into smaller weight to time.
before now, was most the forerunner's clock from the ASCII and the technique graduate school in the world develop.It passes to measure mercury ion in electronics of vibration, can keep 1,700,000,000 years of accurate movement but cent second don't differ.When the most accurate accounted before the equipments was an atom clock, can carry out an accuracy error margin for 8000 ten thousand yearses at an inside.Contrast under, a watch of commonness in a month will the error margin is about 15.The International committee of weights & measures that is located in French Paris' planning a realization is used up to learn clock to replace an atom clock till 2020.The committee is responsible for time and the executive secretary of the frequency Yi Li Si- the inside second Si introduction say, "the optical clock represents clock of future, this is invention that fig ups public very much.Till 2015, we will obtain a stage achievement."Optical clock's most important use will may be GPS and used for following airplane, warship ship and car etc..GPS receives the microwave signal that is sent out by the satellite, mainly is through time that measure signal's start arriving carry on synchronously, can target some object of the ground at 10 meters scope inside.
the scientists believe, if install optical clock on the satellite, they can position a target at one meter scope inside.This kind of accuracy can be used for the auto of car or airplane driver.Certainly, in addition to these, the scientists still have higher expectation to the use of optical clock.They hope that the optical clock can help the basic laws that they examine physics.ASCII and the physicist Di Er-Luo in technique graduate school Sen nation are virtuous to think, "the optical clock can also used for the basic attribute that examines a cosmos.We even can also depend on this kind of accuracy and discover the variety of physics realm basic laws."Root