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  2. Clock - Wikipedia

    en.wikipedia.org/wiki/Clock

    The longcase clock (also known as the grandfather clock) was created to house the pendulum and works by the English clockmaker William Clement in 1670 or 1671. It was also at this time that clock cases began to be made of wood and clock faces to use enamel as well as hand-painted ceramics. In 1670, William Clement created the anchor escapement ...

  3. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The invention of the verge and foliot escapement in c.1275 [87] was one of the most important inventions in both the history of the clock [88] and the history of technology. [89] It was the first type of regulator in horology. [6] A verge, or vertical shaft, is forced to rotate by a weight-driven crown wheel, but is stopped from rotating freely ...

  4. Pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Pendulum_clock

    The pendulum clock was invented on 25 December 1656 by Dutch scientist and inventor Christiaan Huygens, and patented the following year. He described it in his manuscript Horologium published in 1658. [4] Huygens contracted the construction of his clock designs to clockmaker Salomon Coster, who actually built the clock. [4]

  5. Timeline of time measurement inventions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_time...

    1656 - Christiaan Huygens builds the first accurate pendulum clock. [6] 1676 - Daniel Quare, a London clock-maker, invents the repeating clock, that chimes the number of hours (or even minutes). [7] 1680 - Second hand introduced

  6. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    In February 2010, NIST physicists described a second, enhanced version of the quantum logic clock based on individual ions of magnesium and aluminium. Considered the world's most precise clock in 2010 with a fractional frequency inaccuracy of 8.6 × 10 −18, it offers more than twice the precision of the original. [76] [77]

  7. Time clock - Wikipedia

    en.wikipedia.org/wiki/Time_clock

    Early time clock, made by National Time Recorder Co. Ltd. of Blackfriars, London at Wookey Hole Caves museum A Bundy clock used by Birmingham Corporation Transport. An early and influential time clock, sometimes described as the first, was invented on November 20, 1888, by Willard Le Grand Bundy, [2] a jeweler in Auburn, New York.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Ismail al-Jazari - Wikipedia

    en.wikipedia.org/wiki/Ismail_al-Jazari

    The elephant clock was one of the most famous inventions of al-Jazari.. Badīʿ az-Zaman Abu l-ʿIzz ibn Ismāʿīl ibn ar-Razāz al-Jazarī (1136–1206, Arabic: بَدِيعُ الزَّمانِ أَبُو العِزِّ بْنُ إسْماعِيلَ بْنِ الرَّزَّازِ الجَزَرِيّ, IPA: [ældʒæzæriː]) was a Muslim polymath: [2] a scholar, inventor, mechanical ...