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The period of the pendulum's swing depends on its length, so a pendulum clock's rate varied with changes in ambient temperature, causing inaccurate timekeeping. The gridiron pendulum consists of alternating parallel rods of two metals with different thermal expansion coefficients, such as steel and brass .
The clock was created in 1955 as a symbol of the city's watchmakers, and a dedication to nature. Its second hand is the longest in the world, at 2.5 metres (8.2 ft). It was the largest flower clock in the world, with a diameter of 5 metres (16 ft), until the 2005 installation of a 15 metres (49 ft) one in Tehran , Iran.
Older Atmos clock. The first clock powered by changes in atmospheric pressure and temperature was invented by Cornelis Drebbel in the early 17th century. Drebbel built as many as 18 of these, the two most notable being for King James VI & I of Britain, and Rudolf II of Bohemia. The King James clock was known as the Eltham Perpetuum, and was ...
See It! Get the La Crosse Technology Soluna-S Light Sunrise Black LCD Alarm Clock with Temperature and USB Port for just $23 (originally $36) at Walmart!. According to one customer, “This ...
An easy way to do this is to set a clock or watch so it shows "sundial time" [b] which is standard time, [c] plus the equation of time on the day in question. [ d ] The hour-lines on the sundial are marked to show the positions of the shadow of the style when this clock shows whole numbers of hours, and are labelled with these numbers of hours.
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