Next week will be a meeting of the International Telecommunications Union in Geneva, which is imposed on the issue of full and final disposition of an additional or a so-called leap second.
Traditionally, the extra second is added to the days of either December 31 or June 30. In these days of the last minute of the day is not 60, and 61 seconds, ITAR- TASS quoted on the BBC.
The first ... The oscillations of the length of day was known in the XIX century, but only thanks to the invention of atomic clocks in 1949, scientists were able to accurately measure the difference between the earthly and astronomical time. The last time the ... In this 2012, it also must be added.
But now astrophysicists have discovered that the Earth has slowed its rotation. As a result, there is no need to add from time to time, an additional second.
But not all experts agree on its liquidation. They believe that the slow rotation of the planet is temporary and the difference between the astronomical and atomic time remain. Thus, in their opinion, the current system of ...
In this connection, everyone expects a heated discussion at the upcoming Geneva meeting of scientists and keepers of time.
Scientists have also explained why the Earth changes the speed of rotation. To this may affect the lunar tides, friction. For example, in the summer because of the appearance of leaves on the trees increases the moment of inertia, and the Earth's rotation is slowing down compared with the winter period. In winter, the earth's course becomes more spirited. This, of course, is very quietly, with a speed of 10 to the minus 8th power seconds. At about the same ... At the same time, globally, only slows down the rotation of the Earth. To this may affect the lunar tides, friction.
No comments:
Post a Comment