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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.
The earliest known mechanical clocks were large striking clocks installed in towers in monasteries or public squares, so that their bells could be heard far away. Though an early striking clock in Syria was a 12-hour clock, many early clocks struck up to 24 strokes, particularly in Italy , where the 24-hour clock, keeping Italian hours , was ...
The Trinity College Clock mechanism and the Keeper of the Clock, Dr Hugh Hunt in February 2019. The clock is the subject of a current project coordinated by Dr Hugh Hunt, Fellow of Trinity College Cambridge, calibrating it against the National Physical Laboratory time signal and other variables, including the amplitude of the pendulum, humidity, air temperature, air pressure, and air density. [5]
In the early 20th century, quarter-hour chime sequences were added to longcase clocks. A full chime sequence sounds at the top of each hour, immediately followed by the hour strike. At 15 minutes after each hour, 1/4 of the chime sequence plays. Proceeding that, at the bottom of each hour, 1/2 of the chime sequence plays.
Howard Miller Clock Company was founded in 1926, as the Herman Miller Clock Company division of office furniture manufacturer Herman Miller, specializing in chiming wall and mantle clocks. [2] It was spun off in 1937 and renamed, under the leadership of Herman Miller's son Howard C. Miller (1905–1995). [ 3 ]
The Kit-Cat Klock is an art deco novelty wall clock shaped like a grinning cat with cartoon eyes that swivel in time with its pendulum tail. It is traditionally black, but models in other colors and styles are also available. It is a common symbol of kitchens in North American popular culture. [1]
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