Current time in the world

In our lives, the countdown and measurement of time is of great importance. For its measurement, watches were invented: mechanical, sunny, sand, wrist, pocket. Interestingly, what is the exact time measured?

Why is the counting of accurate time go to Greenwich?

Greenwich is called the "sea gate" of London. Initially, it was a suburb, now this is an administrative district in the southeast of the capital. Greenwich is located on the right bank of the Thames and for a long time connected with the British fleet.

For all time zones, there is a so-called point of reference - this is the place where the Greenwich Observatory used to be. The point of reference this observatory was not accidental. The observatory was formed in the seventeenth century, there were calculations that are of great importance for navigators. Calculations concerned, including accurate time.

Due to the fact that the United Kingdom became the most powerful empire, the dependent states were distributed and the settlement of the time held in the Greenwich Observatory. By the end of the nineteenth century, this system was accepted everywhere throughout the world. In 1884, at a special conference, it was decided to determine the "meridian reference". Depending on the remoteness from this meridian and the time was determined in other regions. There were marked zones, ranging from the belt in which the United Kingdom is. Thus, the world time was synchronized.

The time reference system in the world in the seventies was replaced by a different, more accurate, which differs from the time of Greenwich Meridian. Despite this, the famous GMT abbreviation continues to apply what it looks like a tribute to tradition.

In the building of the Old Observatory, which in the seventeenth century was founded by Karl second, is the Museum of Navigation and Astronomical Devices. The Observatory itself was removed from this building back in the 1990s due to light clogging. Now she is nearby in the Greenwich Park.

It is known that Moscow time is more than Greenwich for four hours. One way to find out the exact Moscow time is to use the Internet, call, call, learn on the radio either through the satellite. All regions of Russia are focused on Moscow time, and the countdown goes the same from Moscow time. Due to stretching, the country is in nine time zones.

Who invented the exact time?

For measuring time, a lot of mechanisms were invented by a person. In ancient times, people measured time in sunrises and in the sunsets, paid attention to an increase or decrease in the shade of items throughout the day. Thanks to this, people could approximately navigate time. The role of huge clocks were performed stars. It was seen that different stars were visible in the sky in the sky.

The ancient Egyptians due to the observation of the stars shared the night for twelve gaps. At the same time, they focused on the moments of the appearance of each of the twelve stars. It can be concluded that the division of the day for twenty-four hours began to begin just from the Night division by the Egyptians at twelve time intervals.

Shadow or sundials were also created by the Egyptians. It was a simple board with marks, which became the first prototype of a time measurement device. To measure the time used the same water and fire.

Two thousand years ago appeared in the first hourglass. But the first mechanical clock was invented more than one thousand four hundred years ago. The coil with a chain was attached to the mechanism of these hours, at the end of which there was a load. Thanks to the goods there was a rotation of the coil, the chain was unwound at the same time. With the help of the regulator and a number of gears on the dial, the arrow was moving.

Centuries the least small division was an hour. In 1860, one of London's watchmakers managed to make hours, which showed not only minutes and hours, but also seconds.

Current time in the world

Whatever there were hours - old, new, small or large, expensive or cheap, wring, pocket or wall, they are intended to measure time anyway. The difference between them can only be in how accurate measurements have every specific hours.

Each second must last the same time. This affects the oscillating rhythm created by the pendulum, the vibration of quartz, spring, etc. The most accurate clock was considered a clock from cesium containing "atomic time". It was the most accurate long-term chronometer in the world. The clock can deviate for one second in one hundred thirty-eight million years. The clock "Cese" was jointly created by scientists of Japan and America in one of the European laboratories.

In February 2010, American scientists have created atomic hours, surpassed from cesium. Developments were conducted for several years, as a result of which watches were obtained based on aluminum, which can be lagging behind a second for three billion seven hundred million years. The name of this novelty is Quantum Logic Clock.

This watch is able to divide the time for much smaller intervals, which in the future can be used to verify different constants and laws of physics.

The exact time is measured by hours. Not always these mechanisms are simple. Blancpain 1735 hours are 800 thousand dollars .. A detailed article on this topic can be read.
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