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More than accurate time pieces pendulum clocks
Some history of the pendulum wall clock There were several important people involved in the creation and design of the pendulum clock we see and enjoy today. The birth of the wall pendulum clock was in 1956 by a Dutch mathematician. Dutch was unable to complete his invention before his death. Christian Huygens receives a patent in 1957 to continue the work of pendulum wall clock. Huygens was able to created the regulated for the clock to produce better time. In 1721 George Graham was credited for improving the pendulum clock's accuracy to one second a day, but the device would get hot. John Harrison's was able to improved temperature of the pendulum reducing the friction of the pendulum clock. The great improvement to the pendulum clock does not stop there; in 1889 Siegmund Riefler's created a nearly free pendulum that became the standard in many astronomical observatories. Riefler's improvements allow the clock to attained accuracy of a hundredth of a second a day. Lastly around 1898 R.J. Rudd, developed several free pendulum clocks. One of the most famous clocks was the W.H. Shortt clock that was demonstrated in 1921. Many observatories prefer the Shortt clock over the Riefler's clock as the greatest timekeeper. The Shortt clock was the first device that was accurate enough to detect the season's variations in the rotation of the earth.
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