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A list of permanent working clocks with the largest faces in the world. Entries include all clocks with faces at least 4 m (13 ft) in diameter. Clocks can be located on the exterior or interior of buildings, and towers as well as on the ground as is the case with floral clock faces.
Therefore, another type of temperature-compensated pendulum, the mercury pendulum invented in 1721 by George Graham, was used in the highest-precision clocks. [8]: p.289 [4] By 1900, the highest-precision astronomical regulator clocks used pendulum rods of low thermal expansion materials such as invar [3] [2] and fused quartz. [4]
An Act of Parliament clock, also commonly known as a tavern clock, is a type of large clock originally hung in inns and taverns in the United Kingdom, beginning in the mid-18th century. Such clocks were plain in design, the faces were around two to five feet in diameter, and they were hung on the wall.
The Edinburgh Floral Clock. A floral clock, or flower clock, is a large decorative clock with the clock face formed by carpet bedding, usually found in a park or other public recreation area. Most have the mechanism set in the ground under the flowerbed, which is then planted to visually appear as a clock face with moving hands which may also ...
A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as churches, university buildings, and town halls. As a public amenity to enable the community to tell the time, it has a large face visible from far away, and often a striking mechanism which rings ...
Clocks faces on two towers 7.6 m (25 ft) diameter. Building part of the World Heritage Maritime Mercantile City [40] 25: Elizabeth Tower: 96 m (315 ft) 4: Yes: 1859: Tower Building: Clock Tower/Government: United Kingdom: London: Clock faces are 7 m (23 ft). Commonly known as 'Big Ben', although this is the name of the largest chiming bell.
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator: It swings back and forth in a precise time interval dependent on its length, and resists swinging at other rates.
A wall clock for example requires a secure attachment "[...] to a wall if accidents are to be avoided and clocks are to run properly." [8] Clock cases, which come in many different materials, require special consideration and treatment in their own right. Conservators further advise not exposing a clock to a heat source of any kind, including ...
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