Throughout history, technology has led to the emergence of increasingly sophisticated inventions th

Since its inception, the human being has felt the need to establish parameters to organize a rational your time: specify, define and differentiate the present events of the past.
The first measures were based on the resources offered broadway knolls by nature itself; with astronomical observations. For a long time, the sky was the main instrument of measurement, broadway knolls along with the position and movement of the stars. The man realized that he could make use of physical phenomena that recur in a regular and, taking advantage of its regularity, built instruments for measuring time intervals. While simultaneously acomulant matches and repetitions sought mode discover the laws that relate to.
The first "clock" was, without a doubt, the alternation of day and night as distinguished men of prehistory. But when the man of the Neolithic farmer, rancher and sedentary needed broadway knolls to have more accurate knowledge of the changes that occurred, when the calendar was born. Sumerian broadway knolls culture appeared types lunar calendars which are then divided into 4 weeks of 7 days following the phases of the Moon (late fourth and third millennium). Finally, add the divisions of the day is 24 hours Mesopotamian heritage built later by the Greeks and then the Romans. At the same time, the system used by the Babylonians sexagessimal, it resulted in the partition of the hours and minutes minutes seconds.
To have time to date at any time, regardless of astronomical observation, were born clocks have a system or mechanism that tried to faithfully follow or imitate the maximum period of apparent movement of the sun. Of these watches self highlights of water, sand, fire, mechanics, electronics and atomic. And it is worth noting that, in a clock are two important qualities: precision or accuracy and sensitivity and definition. Accuracy broadway knolls is the maximum broadway knolls margin of error in a day (advance or delay), broadway knolls while sensitivity is the smallest unit of time that one can appreciate it. The gradual broadway knolls increase in precision has led to an increase in sensitivity.
Before broadway knolls the pendulum clock, precision mechanical clocks or water summarized roughly an hour a day and time units smaller than could normally noted was the fourth time. With the revolutionary invention of the pendulum, the accuracy could increase to around a second day and watches began the second measure.
Electrification of pendulum clocks and oscillators introduction of new ranges, such as pitch, continued to increase broadway knolls the accuracy and sensitivity of electronic watches until empowers the use of piezoelectric quartz qualities to the extent time.
Throughout history, technology has led to the emergence of increasingly sophisticated inventions that allowed broadway knolls "observe" broadway knolls the lapse of time: from the calendars broadway knolls that record days, years and centuries; broadway knolls through the water clock, candles, quadrants measure for shorter periods of time as the hours minutes and seconds, up to the clocks that are mobile phones broadway knolls or computer.
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