The reason for the difference in Earth’s rotation speed is still unknown. (files)
On July 29, Earth broke the record for shortest day as it completed one full rotation in 1.59 milliseconds, less than its 24-hour record.
based on does not depend onRecently, the planet has increased its speed. Back in 2020, Earth experienced the smallest moon on record since the 1960s. On July 19 of that year, the shortest time ever measured. This is 1.47 milliseconds shorter than a typical 24-hour day.
The following year, the planet continued to rotate at an increasing speed overall, but no records were broken. However, according to Interesting Geometry (IE), the phase of 50 years shorter days may begin now.
The reason for the difference in Earth’s rotation speed is still unknown. But scientists speculate that it may be caused by processes in the inner or outer layers of the core, oceans, tides, or even climate change.
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Some researchers also believe that it may be related to the motion at the surface of Earth’s geographic poles, known as the “Chandler’s wobble”. In simple words, it is similar to the vibration that is seen when a spinning top starts to gain speed or slows down, according to scientists Leonid Zotov, Christian Besward and Nikolai Sidorenkov.
based on does not depend onIf the Earth continues to rotate at an increasing rate, this could result in a negative leap second, in an attempt to keep the Earth’s rotation rate around the Sun consistent with measurements from atomic clocks.
However, a negative leap second can have disappointing consequences for smartphones, computers and communication systems. Citing the Meta blog, the outlet said the second jump “essentially benefits scientists and astronomers” but is a “risky exercise that does more harm than good.”
This is because the clock advances from 23:59:59 to 23:59:60 before resetting to 00:00:00. Such time jumps can lead to software crashes and corrupted data due to timestamps on the data store.
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Meta also states that if a negative second jump occurs, the clock will change from 23:59:58 to 00:00:00, and this can have “catastrophic effects” on software that relies on timers and schedulers. does. based on in another senseTo solve this problem, the international timer may need to add a negative leap second – the “falling second”.
In particular, Coordinated Universal Time (UTC), the main time standard by which the world sets clocks and time, has been updated by 27 leap seconds.
