Today, say the time seems simple thanks to the number of devices that display the time and through devices such extraordinary precision atomic clocks and time servers. With these devices, it's pretty easy to forget the complexity of the chronology.
The precision expressed in nanoseconds supplying equipment such as systems with GPS, air traffic control and NTP servers (Network Time Protocol) is very far from the first tools that were invented and which were based on the movement of the sun.
The sundials were the first real clocks, but of course, has disadvantages, for example, did not work at night or on cloudy days. However, being able to receive time in a relatively precise was an innovation for whole civilizations and used the most developed civilizations.
However, relying on celestial bodies to know what time it is, as we have done for thousands of years, was not very reliable, as we have realized with the invention of 'atomic clock.
Before atomic clocks, electronic clocks provided the level of highest precision. They were invented in the late nineteenth century and although they were much more reliable than mechanical clocks are drifting further and lost about a second or two every week.
The electronic clock operating with oscillations (vibrations and energy) crystals such as quartz. However, atomic clocks use the resonant atoms such as cesium. This has many vibrations per second which makes it incredibly accurate (the modern atomic clocks do not drift even one second over 100 million years ago).
Once they discovered they could get the time in a precise manner, it became apparent that relying on the rotation of the earth to obtain the time was not as accurate as the atomic clocks. Thanks to their precision, we soon discovered that the earth's rotation was not accurate and that the movement of the earth is slowing down or accelerating is (in minutes) each day. To offset this, the UTC (Coordinated Universal Time) has the seconds that are added once or twice a year (second jump).
The atomic clocks provide a basis for the TUC, which is used by thousands of NTP time servers to synchronize computer networks.
The precision expressed in nanoseconds supplying equipment such as systems with GPS, air traffic control and NTP servers (Network Time Protocol) is very far from the first tools that were invented and which were based on the movement of the sun.
The sundials were the first real clocks, but of course, has disadvantages, for example, did not work at night or on cloudy days. However, being able to receive time in a relatively precise was an innovation for whole civilizations and used the most developed civilizations.
However, relying on celestial bodies to know what time it is, as we have done for thousands of years, was not very reliable, as we have realized with the invention of 'atomic clock.
Before atomic clocks, electronic clocks provided the level of highest precision. They were invented in the late nineteenth century and although they were much more reliable than mechanical clocks are drifting further and lost about a second or two every week.
The electronic clock operating with oscillations (vibrations and energy) crystals such as quartz. However, atomic clocks use the resonant atoms such as cesium. This has many vibrations per second which makes it incredibly accurate (the modern atomic clocks do not drift even one second over 100 million years ago).
Once they discovered they could get the time in a precise manner, it became apparent that relying on the rotation of the earth to obtain the time was not as accurate as the atomic clocks. Thanks to their precision, we soon discovered that the earth's rotation was not accurate and that the movement of the earth is slowing down or accelerating is (in minutes) each day. To offset this, the UTC (Coordinated Universal Time) has the seconds that are added once or twice a year (second jump).
The atomic clocks provide a basis for the TUC, which is used by thousands of NTP time servers to synchronize computer networks.
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