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  2. Astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Astronomical_clock

    The astronomical clock in the tower of the New Town Hall was installed in 1910. Kryštofovo Údolí. The Kryštofovo Údolí astronomical clock is a modern astronomical clock (inaugurated in 2008), built-in a former electrical substation. Hojsova Stráž. An astronomical clock in the Bohemian Forest was inaugurated in 2017. It has a concentric ...

  3. Jens Olsen's World Clock - Wikipedia

    en.wikipedia.org/wiki/Jens_Olsen's_World_Clock

    Jens Olsen's World Clock or Verdensur is an advanced astronomical clock which is displayed in Copenhagen City Hall. [ 1 ] [ 2 ] The clock consists of 12 movements which together have 15,448 parts. [ 3 ] [ 4 ] The clock is mechanical and must be wound once a week. [ 5 ]

  4. Honcheonsigye - Wikipedia

    en.wikipedia.org/wiki/Honcheonsigye

    The Honcheonsigye (meaning armillary clock) is an astronomical clock made by Song Yi-Yeong (송이영; 宋以潁), a professor of Gwansanggam (관상감; 觀象監) (one of the scientific institution of Joseon) in 1669. [1] It was designated as South Korean national treasure number 230 in August 9, 1985.

  5. List of astronomical instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    An astronomical instrument is a device for observing, measuring or recording astronomical data. They are used in the scientific field of astronomy, a natural science that studies celestial objects and the phenomena that occur in the cosmos, with the object of explaining their origin and evolution over time. Many are also used in navigation and ...

  6. Terrestrial Time - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_Time

    Terrestrial Time (TT) is a modern astronomical time standard defined by the International Astronomical Union, primarily for time-measurements of astronomical observations made from the surface of Earth. [1] For example, the Astronomical Almanac uses TT for its tables of positions (ephemerides) of the Sun, Moon and planets as seen from Earth.

  7. Wells Cathedral clock - Wikipedia

    en.wikipedia.org/wiki/Wells_Cathedral_clock

    The clock is one of the group of famous 14th– to 16th–century astronomical clocks to be found in the West of England. The surviving mechanism, dated to between 1386 and 1392, was replaced in the 19th century, and was eventually moved to the Science Museum in London, where it continues to operate. [ 1 ]

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