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An atomic clock keeps time by using the frequency of electromagnetic radiation associated with the natural oscillations of atoms as a standard of measurement. Atomic clocks are the most accurate clocks developed; a cesiu... More »
The latest atomic clock developed by the National Institute of Standard and Technology and the University of Colorado at Boulder is accurate to within one second per 15 billion years, as of April 2015. This accuracy leve... More »
Atomic clocks are controlled by a radio signal produced by the National Institute of Standards and Technology in Fort Collins, Colorado. The receiver inside the clock automatically adjusts the time. Resetting is accompli... More »
Atomic clocks display time according to the frequency of cesium atoms changing from a positive to a negative electrical state. Cesium is an atomic element that vibrates as it changes its electrical charge. A detector cou... More »
The latest atomic clock developed by the National Institute of Standard and Technology and the University of Colorado at Boulder is accurate to within one second per 15 billion years, as of April 2015. This accuracy leve... More »
Manuals Online and The Clock Depot have atomic clock user manuals available for purchase or download as of 2015. Also, many companies provide downloadable manuals on their websites. More »
An atomic clock is usually set by adjusting the desired time zone then allowing it to synchronize with the signal from radio station WWVB, which broadcasts the time of the atomically controlled clock. WWVB, established b... More »
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Amazon Prime Benefits
Free 2-day shipping, streamingvideo, music, photo storage & more.
-
Learn More About Alexa
Hands-free voice control for music,calling, smart home devices & more.
-
Shop Amazon Fire Tablets
Tablets designed for entertainmentat an affordable price.
-
Explore Amazon Smart Home
Shop for smart home devices thatwork with Alexa. See our guide too.
-
Meet the Fire TV Family
See our devices for streaming yourfavorite content and live TV.
-
Shop Echo & Alexa Devices
Play music, get news, control yoursmart home & more using your voice.