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  2. Clock of the Long Now - Wikipedia

    en.wikipedia.org/wiki/Clock_of_the_Long_Now

    The Clock of the Long Now, also called the 10,000-year clock, is a mechanical clock under construction that is designed to keep time for 10,000 years. It is being built by the Long Now Foundation . A two-meter prototype is on display at the Science Museum in London.

  3. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    After a launch, most countdown clocks begin to show Mission Elapsed Time, which is typically shown as "T plus." The adjacent picture shows "+00:00:07", approximately seven seconds after liftoff. The time T−0 is specifically the moment of launch commit, when it is no longer possible to prevent liftoff. This is necessarily slightly before the ...

  4. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.

  5. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    The Doomsday Clock is a symbol that represents the estimated likelihood of a human-made global catastrophe, in the opinion of the members of the Bulletin of the Atomic Scientists. [1] Maintained since 1947, the Clock is a metaphor, not a prediction, for threats to humanity from unchecked scientific and technological advances. That is, the time ...

  6. Prague astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Prague_astronomical_clock

    The Orloj is mounted on the southern wall of Old Town Hall in the Old Town Square.The clock mechanism has three main components – the astronomical dial, representing the position of the Sun and Moon in the sky and displaying various astronomical details; statues of various Catholic saints stand on either side of the clock; "The Walk of the Apostles", an hourly show of moving Apostle figures ...

  7. Time for Timer - Wikipedia

    en.wikipedia.org/wiki/Time_for_Timer

    Time for Timer is a series of seven short public service announcements broadcast on Saturday mornings on the ABC television network starting in 1975. The animated spots feature Timer, a tiny cartoon character who is an anthropomorphic circadian rhythm , the self-proclaimed "keeper of body time."

  8. Shot clock - Wikipedia

    en.wikipedia.org/wiki/Shot_clock

    A shot clock is a countdown timer used in a variety of games and sports, indicating a set amount of time that a team may possess the object of play before attempting to score a goal. Shot clocks are used in several sports including basketball , water polo , canoe polo , lacrosse , poker , ringette , korfball , tennis , ten-pin bowling , and ...

  9. Launch Complex 39 Press Site - Wikipedia

    en.wikipedia.org/wiki/Launch_Complex_39_Press_Site

    A large illuminated digital countdown clock and a flagpole flying an American flag on the edge of the turning basin have often been included in television coverage and launch photos. Before a launch, the clock counts down, showing the remaining time until T-zero in hours, minutes and seconds (–00:00:00). After launch, the clock counts forward ...