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  2. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    In addition to increased accuracy, the development of chip-scale atomic clocks has expanded the number of places atomic clocks can be used. In August 2004, NIST scientists demonstrated a chip-scale atomic clock that was 100 times smaller than an ordinary atomic clock and had a much smaller power consumption of 125 mW .

  3. List of atomic clocks - Wikipedia

    en.wikipedia.org/wiki/List_of_atomic_clocks

    This page was last edited on 6 December 2024, at 01:21 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  4. List of UTC timing centers - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_timing_centers

    List of UTC timing centers is a list of over 70 recognized maintainers of atomic clocks around the world from which UTC is calculated. [1] Below are links to some of the more notable time centers which contribute to the calculation of UTC.

  5. Nuclear clock - Wikipedia

    en.wikipedia.org/wiki/Nuclear_clock

    The expected performance of a single-ion nuclear clock was further investigated in 2012 by Corey Campbell et al. with the result that a systematic frequency uncertainty (accuracy) of the clock of 1.5 × 10 −19 could be achieved, which would be by about an order of magnitude better than the accuracy achieved by the best optical atomic clocks ...

  6. NIST-F1 - Wikipedia

    en.wikipedia.org/wiki/NIST-F1

    NIST-F1 is a cesium fountain clock, a type of atomic clock, in the National Institute of Standards and Technology (NIST) in Boulder, Colorado, and serves as the United States' primary time and frequency standard. The clock took fewer than four years to test and build, and was developed by Steve Jefferts and Dawn Meekhof of the Time and ...

  7. Master clock - Wikipedia

    en.wikipedia.org/wiki/Master_clock

    Modern radio clocks are synchronised by radio signals or Internet connections to a worldwide time system called Coordinated Universal Time (UTC), which is governed by primary reference atomic clocks in many countries. A modern, atomic version of a master clock is the large clock ensemble found at the U.S. Naval Observatory. [1]

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