But what are the atomic clocks and watches because they are more accurate than conventional? A standard clock, if the liquidation, electrical or battery once the number of"tick ", which is a resonator. The resonator is a device that contains the actual length of time. In most clocks, the resonator is either a pendulum or ((in digital watches) oscillations of the power line is a bit 'different in the United States and Europe).
Atomic clocks and a resonator, but the resonator is given to the atoms. The answer is the emission or absorption of microwave radiation from a electro-magnetic atom. It 'very smooth, and no matter what is used by the cesium atom, the resonance frequency is always exactly the same thing. For this reason, atomic clocks are much better than other clocks - other clocks resonators can be influenced by many variables such as temperature, humidity and atmospheric conditions. None of these affect the atoms so that atomic clocks never lose or gain time.
The synchronization of atomic clocks
The reason why all the clocks show the same time, wherever you go, why don't have their cesium atom - would be impossible, because it ' s incredibly expensive and requires very specific conditions. Atomic clocks that receive time from a common location, where n is one of the most'part of the world ' s atomic clocks work. A low frequency radio signal, sends the time in this place all the atomic clocks in the field. There are currently about 200 atomic clocks around the world in sixty countries.
In the United States, most atomic clocks for use in home and office at the National Institute of Standards and Technology atomic clock in Boulder, Colorado synchronized. An official at another U.S. Naval Observatory atomic clock in Washington, DC and is the official watch of the Department of Defense. Because these two atomic clocks are in a second of each other over a million times a year, it is unlikely that the time displayed on the Pentagon's atomic clocks will change from time to atomic clock your home office!
Has information such as schedules house master clock atomic Get?
Global Positioning Satellite (GPS) in the sky above us, the signals transmitted by the official atomic clocks at different target atomic wall clocks and table of the world. In other countries, so that the signal must come, according to the official atomic clock is the clock of this region, as in Boulder, Colorado, is for the United States.
This atomic clocks surprisingly accurate are also responsible for the fact that all computers are synchronized with built-in clock and keep the correct time, and whether on or off. Following a precise time using GPS, you can be sure that their atomic clocks, you can know exactly what time it is up to nano-second!
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