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  2. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    A modern wristwatch featuring solar charging and Bluetooth capabilities A 1983 Casio watch with touchscreen. A watch is a timepiece carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities.

  3. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  4. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The 12th-century Jayrun Water Clock at the Umayyad Mosque in Damascus was constructed by Muhammad al-Sa'ati, and was later described by his son Ridwan ibn al-Sa'ati in his On the Construction of Clocks and their Use (1203). [45] A sophisticated water-powered astronomical clock was described by Al-Jazari in his treatise on machines, written in ...

  5. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    Circuit board of an e block from a chronograph-wristwatch.The quartz crystal oscillator can be seen on right. Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time.

  6. Clock - Wikipedia

    en.wikipedia.org/wiki/Clock

    An analog pendulum clock made around 18th century. A clock or chronometer is a device that measures and displays time.The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year.

  7. Alarm clock - Wikipedia

    en.wikipedia.org/wiki/Alarm_clock

    This is an accepted version of this page This is the latest accepted revision, reviewed on 7 March 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...

  8. Molnija - Wikipedia

    en.wikipedia.org/wiki/Molnija

    Russian Poljot "Siberia" model with finished Molnija movement, seen through a crystal back Molnija AChS-1 cockpit chronograph. Chelyabinsk Watch Factory "Molnija" (sometimes transliterated Molniya; Russian: Челябинский часовой завод) was a Russian watch and clockmaker based in Chelyabinsk, Chelyabinsk Oblast.

  9. Grandfather clock - Wikipedia

    en.wikipedia.org/wiki/Grandfather_clock

    Longcase clock circa 1730 by Timothy Mason (clockmaker) of Gainsborough, Lincolnshire. The Oxford English Dictionary states that the popular 1876 song My Grandfather's Clock is responsible for the common name "grandfather clock" being applied to the longcase clock.