About Setting Atomic Clocks

An atomic clock gives a precise measurement of time.

Atomic clocks sold to the general public are actually radio-controlled clocks, according to the National Institute of Standards and Technology. These clocks are controlled by a master atomic clock, that in return, sets the accurate time.

Significance

The master atomic clock in Fort Collins, Colorado, is regulated and maintained by the United States government for the most accurate time measurement possible. It then sends out a radio signal that is decoded by the radio-controlled clocks and sets them accordingly.

Coverage

The power of the radio signal is strong enough to cover the entire continent of North America, says the National Institute of Standards and Technology. Depending on the clock, it can decode and reset the time from once a day to even every four hours.

Helpful Tips

Like any radio wave technology, interference can hinder the decoding or time resetting process. Keep the clock away from computer monitors and metals that can stop the incoming frequencies, and have fresh batteries inside to help the clock stay accurate day after day.

References

• National Institute of Standards and Technology: WWVB Radio Controlled Clocks