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2. Pendulum clock - Wikipedia

   en.wikipedia.org/wiki/Pendulum_clock

   A torsion pendulum clock requiring only annual winding is sometimes called a "400-Day clock" or "anniversary clock", sometimes given as a wedding gift. Torsion pendulums are also used in "perpetual" clocks which do not need winding, as their mainspring is kept wound by changes in atmospheric temperature and pressure with a bellows arrangement.

3. Pendulum - Wikipedia

   en.wikipedia.org/wiki/Pendulum

   For these reasons mercury pendulums were used in the highest precision clocks, but gridirons were used in quality regulator clocks. Gridiron pendulums became so associated with good quality that, to this day, many ordinary clock pendulums have decorative 'fake' gridirons that don't actually have any temperature compensation function.

4. History of timekeeping devices - Wikipedia

   en.wikipedia.org/wiki/History_of_timekeeping_devices

   Devices and methods for keeping time have gradually improved through a series of new inventions, starting with measuring time by continuous processes, such as the flow of liquid in water clocks, to mechanical clocks, and eventually repetitive, oscillatory processes, such as the swing of pendulums. Oscillating timekeepers are used in modern ...

5. Why do the clocks go back and was the measure really ... - AOL

   www.aol.com/why-clocks-back-measure-really...

   Here is everything else you need to know about when and why the clocks “fall” back. – When are the clocks going back? Every year clocks go back an hour at 2am on the last Sunday of October.

6. Torsion pendulum clock - Wikipedia

   en.wikipedia.org/wiki/Torsion_pendulum_clock

   A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum. This is a weighted disk or wheel, often a decorative wheel with three or four chrome balls on ornate spokes, suspended by a thin wire or ribbon called a torsion spring (also ...

7. Daylight saving time: 10 interesting facts on why we set ...

   www.aol.com/daylight-saving-time-10-interesting...

   Roskey had corrected the time on the clock, which was off because of the switch to daylight savings time. The bank will become Republic Security Bank (cq) April 19 (cq). Staff Photo by Lannis Waters

8. Shortt–Synchronome clock - Wikipedia

   en.wikipedia.org/wiki/Shortt–Synchronome_clock

   Shortt clocks kept time with two pendulums, a primary pendulum swinging in a vacuum tank and a secondary pendulum in a separate clock, which was synchronized to the primary by electro-mechanical means. The secondary pendulum was attached to the timekeeping mechanisms of the clock, leaving the primary pendulum virtually free of external ...

9. The 3 Most Overpriced Cities in America, According to Gen Z ...

   www.aol.com/finance/3-most-overpriced-cities...

   Realtor.com reported the sale price per square foot was $903. Nearly 40% of 18- to 24-year-olds surveyed names New York City as the most overpriced housing market in the country. Despite higher ...