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Constructed in ancient Egypt, were among the first shadow clock around 3,500 B.C.
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Dating back from 1,500 B.C., the sun dial also appeared around ancient Egypt was used to measure parts of the day.
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Though there is no confirmed civilization, it is said to have been invented by the ancient Greeks around 4th century B.C., and was later made to be more accurate than around 325 B.C.
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First mentioned in Chinese poems around 520 A.D. said that the it was a graduated candle measured by its burn rate to determine time at night.
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Built as necessity for the use in church life, the first built by future Pope Sylvester II in 996 A.D. and later the famous clock, Big Ben, in 1908 was built for the public.
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Beginning in Europe around the 14th century, later on would be the standard kind of clock used to this day.
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From around the 15th century and on was the first dependable, reusable, accurate, and easy to make device comprised of 2 glass bulbs connected with material that can trickle through.
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In 1504 Germany, Peter Henlein invented the first portable timepiece, though was not very accurate.
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Jost Burgi invented the minute hand on a clock for astronomers who needed an accurate clock for stargazing.
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Invented by Christian Huygens, pendulum clock are the classically seen clock with a swaying weight at the bottom that make the clock more accurate.
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An American innovator, Levi Hutchins invented the mechanical alarm clock that only rang at 4 a.m. Another innovator, Seth E. Thomas, in 1876 patented the wind-up version.
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Developed by Sir Sanford Fleming, as of still used today, in 1878 out of the need to aid weather forecasting and train travel and as of today, are evenly divided by geological areas into time zones.
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The first digital timepiece ws invented by Austrian engineer Josef Pallweber using the "jump-hour" mechanism that has a rotating disk changing the numbers.
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Made by the Warren Clock Company produced the first clock that was battery-powered. Commonly prior to this, clock were either wound up or had a pendulum.
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Of 1923, the watch was developed by Swiss inventor John Harwood.
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Based on the vibration of quartz crystals in an electric circuit, was invented by Canadian engineer Warren Marrison for more reliable telecommunication.
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It was the ammonia maser device that was the first atomic clock in 1949, the beginning of the dawn of modern clocks. It was based on the concept of "Magnetic resonance" by Isidor Rabi,and built at the U.S. National Bureau of Standards.
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Introduction of the first smartphone was marketed in 1994 by telecommunication company BellSouth under the name Simon Personal Communicator. There for, the phone is called the Simon.
