The decision also “extend” June was accepted in the second month of winter.
The land is hampered by gravitational interactions with the moon and the sun. Scientists estimate that the average solar per day were about 86,400 seconds in 1820. However, if it is a small mismatch will occur every day of the year “nabezhit” virtually an entire second. Because of the Earth’s rotation to calculate exactly when the need arises in the leap second – is unrealistic. When will be added next, really became known as the factors influencing the speed of rotation of the Earth is not enough to predict. Member of the governing board of the international organization, a geophysicist Chopo Ma informed: “In the short term, the leap second is not as predictable as everyone would like».
Today, to watch over the world will be added extra seconds.
In the last second of coordination was added in 2012. Since then, they have become less frequent. In this case the duration of any single day, I have absolutely unpredictable. She looks the universal time and synchronizes it with astronomical.
Scientists monitor the speed of rotation of the Earth, using only the exact technique called “Very Long Baseline Interferometry» (VLBI).
VLBI tracks all these changes, focusing on quasars, the brightest celestial objects in the night sky, which essentially remain stationary relative to the Earth (since removed from it billions of light years). This ensures the synchronization of atomic clocks with the Earth. Scientists predict the planet Earth really slows down, but the magnitude of some of the solar day may vary over time in any direction.
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