September 22, London inspired by riots, British artist Dominic Wilcox made a new watch. In the hands of the watch this and a minute, art home outfit representing the riots on participants or riot police even ordinary citizens little false man, with the rotation of the pointer, these false's position and relationship will change accordingly. For figure CFP1 second time can do?The world record holder in the men's 100 m sprint can run more than 10, bolton meters, bees can vibration about 230 times wings, the light energy around the earth 7 laps and a half. As for the ordinary you I, perhaps walk 2 road, blink eyes or under said "hello".But in the world of science, since 1999, a 1 second debate about the 11-year old never. Behind this is in, the U.S., Japan, Britain, France and other countries to safeguard national image and fighting for the interests of the state game. January 16, 2012, the international radio plenary session in Geneva will open. At the appointed time, general meeting will be through the international experts opinion to decide the fate of a second,Drunk the earth to make every day is not the same long, this means that the universal time is not accurate.Since October this year, be responsible for information communication technology affairs of the United Nations international telecommunication union leading institutions published on the web the meeting time, shaanxi province is located in xian city in one office phone started ringing. The office is the host of the Chinese academy of sciences country GPS clock center frequency reference laboratories DongShaoWu director. The laboratory is responsible for Beijing time and the formation of the keep.In a telephone conversation, DongShaoWu asked the most is the issue of Greenwich mean time also will continue to exist. To this, the chief researcher said: "the time of course there is, but with what method measure time may change.".Since ancient times, humans for the concept of time and the sun related.
People make the earth the same longitude line between two times the sun for time intervals as a depending on the solar days. History of the year was on the solar day up, take again average get a flat solar days, are divided into 24 hours.In 1884, the astronomers representative meeting decided to through Greenwich meridian in London for the prime meridian,Discount sunglasses as the starting point of the geographical longitude, also is the world standard "time zone" starting point40 years later, the Greenwich observatory first through the British broadcasting company to outer space broadcast time signal, make the world radio listeners can according to this time signal correction their clocks and watches. From then on, Greenwich mean time is recognized as the standard time, every hour, there will be issued when the information to the world. World (UT) and universal time (GMT) become synonymous.We use the time standards is a product of the combination of astronomy and physics, called the coordinated universal time (UTC). According to DongShaoWu introduction, located in France international power bureau is responsible for time measurement precision and continuous "atomic time", and is located in the United States of the earth's rotation service organization responsible for measuring accord with "the sun rises in the morning" of the world.Due to the world and no molecule accurate, and also take care of humanity "the lark," life habit, the scientists define "leap second" modified and the formation of common now coordinated universal time. In the world and are more than 0.9 seconds between the molecule, it sent the world on dial 1 seconds (negative leap seconds, the last minute for 59 seconds) or backward dial 1 seconds (is leap second, the last minute for 61 seconds); Leap seconds in general and 30 June and December 31.The duration of 1 SEC guy guaranteed the Greenwich mean time continue to exist, it would become scientists point of contention. In 1999, the international telecommunication union, the earth rotation service organizations and international international astronomical union launched institutions such as a survey, collection of experts in the field of different to cancel the leap second opinion.Deadlocked because the two sides in May, 2003, held in Italy for the first time to discuss changes to coordinate the world and cancel the leap second meeting, also have not reached a clear conclusion. The next year, the U.S. delegation again to waive leap second application, still get more support. The end of 2008, the support of a leap second cancel again proposing, and says it has to get more support; Britain, China and other countries are clear opposition to it.
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