Meta description:People were not the only people who wanted to be faster by 2020. According to scientists, the Earth spun faster than usual last year.
Last year, for the shortest astronomical day, set in 2005, Earth broke the previous record. Indeed, in 2020, the Earth broke the record 28 times. And it's spinner even quicker.
Although the Earth's reliability on average and rotation around its axis takes 86,400 seconds it is not perfect.
"The length of the average solar day can change by milliseconds (one millisecond is 0.001 seconds) when highly precise nuclear clocks were developed in the 1960s," write Graham Jones and Konstantin Bikos on TimeandDate.com.
The Earth spins can be affected by different factors as fast or slow.
"Atmospheric changes, especially global atmospheric pressure, and wind movements that may have a relationship to climate-related signals such as El Niño, are powerful enough to have an Earth's rotation signal," said David A. Salstein, Atmosphere Research scientist, in 2003.
These changes can be summed up. The Earth has actually slowed down for the last several decades in LiveScience reports. When the time it takes the earth to turn fully, the UTC is adjusted by more than 4 seconds from the Coordinated Universal Time.
Every year and a half, scientists added an average "leap second." On 31 December 2016, the last one was added.
Every astronomical day is 0.05 milliseconds shorter in 2021 since Earth has accelerated and this adds up to 19 milliseconds over the course of the year.
"The Earth's rate of rotation may well require a negative leap second, but it is too early to say if it is likely to be," physicist Peter Whibberley of the U.K. Physics National Laboratory told The Telegraph. "At the end of leap seconds, international discussions are also under way and the need for a negative leap second could also drive the decision to end leap seconds for the good." "
The average person may not notice that a second leap has been taken or added, but it will affect matters such as navigation, spaceflight, computer networks and astronomers.
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