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  2. International Atomic Time - Wikipedia

    en.wikipedia.org/wiki/International_Atomic_Time

    The United States Naval Observatory began the A.1 scale on 13 September 1956, using an Atomichron commercial atomic clock, followed by the NBS-A scale at the National Bureau of Standards, Boulder, Colorado on 9 October 1957. [9] The International Time Bureau (BIH) began a time scale, T m or AM, in July 1955, using both local caesium clocks and ...

  3. List of atomic clocks - Wikipedia

    en.wikipedia.org/wiki/List_of_atomic_clocks

    This is a list of some experimental laboratory atomic clocks worldwide. ... Deep Space Atomic Clock [30] 2019-2021 Hg ion Jet Propulsion Laboratory;

  4. Atomichron - Wikipedia

    en.wikipedia.org/wiki/Atomichron

    The Atomichron was the world's first commercial atomic clock, built by the National Company, Inc. of Malden, Massachusetts. It was also the first self-contained portable atomic clock and was a caesium standard clock. More than 50 clocks with the trademarked Atomichron name were produced. [1] [2] [3] [4]

  5. 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.

  6. List of animated television series of the 1940s and 1950s

    en.wikipedia.org/wiki/List_of_animated...

    First TV cartoon to be in colour; historic cartoon history landmark Herge's Adventures of Tintin: 104 Belgium 1957–1964 Captain Pugwash: 58 UK 1957–1998 The Adventures of Spunky and Tadpole: 19 US 1958–1961 Bozo: The World's Most Famous Clown: 156 US 1958–1962 The Huckleberry Hound Show: 68: US 1958–1962 Yogi Bear: 35 US 1958–1960

  7. 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 ...

  8. An unsettling photo of a US physicist cheerfully ... - AOL

    www.aol.com/article/2016/05/16/an-unsettling...

    Related: Iconic photos from WWII: Fat Man was the second nuclear weapon to be deployed in combat after the US dropped a 5-ton atomic bomb, called " Little Boy ," on the Japanese city of Hiroshima.

  9. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    The development of atomic clocks has led to many scientific and technological advances such as precise global and regional navigation satellite systems, and applications in the Internet, which depend critically on frequency and time standards. Atomic clocks are installed at sites of time signal radio transmitters. [103]

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