When the days seem to shorten; They have been since the summer solstice in June. But Earth recently recorded its shortest day for a very different and unusual reason: Earth is spinning faster. Scientists have found this development puzzling, although there are some theories about why it happened and the effects it has on our lives.
Scientist Leonid Sotov told CBS News that June 29, 2022 was 1.59 milliseconds shorter than the current average. The normal length of a day is 24 hours or 86,400 seconds. But in recent years, Earth’s rotation has jumped back, slowing by a few milliseconds in some days. “Earth has been accelerating since 2016,” Zodov said. A study was published last March What causes changes in the Earth’s rotation? And this year is running faster than 2021 and 2020.
This increased cycle doesn’t decrease every day – just occasionally. But if things continue like this, the main method of measuring time on Earth – a universal, highly accurate method called atomic time – will have to change. A negative leap second may need to be added as the hour may skip a second. “Since the clock hands relative to the Earth’s rotation cannot be changed, we fix the atomic clock,” Zodov said.
But not all scientists support negative momentum. Metaengineers Oleg Oblukov and Ahmad Byakovi recently wrote a blog post criticizing the idea. This, they said, could cause serious flaws in the technology, such as data corruption. The concept has never been tested.
Some scientists envision waves on Earth. Others believe that the polar caps continue to melt and freeze causing the Earth’s rotation to speed up and slow down.
“It’s about the momentum conservation law that applies to planet Earth,” Obleukhov and Byagowi told CBS. “Every atom on this planet contributes to the Earth’s angular momentum based on its distance from the Earth’s axis of rotation.” . “So when things move, Earth’s angular velocity varies.”
“This phenomenon can be easily visualized by thinking of a skier controlling angular velocity by controlling his arms and hands,” they said. “When they extend their arms, the angular velocity decreases, which conserves the speed of the skater. As soon as the skater bends their arms again, the angular velocity increases. The same thing is happening here because of the warming of the ground. The ice melts and the bullets speed up. In the corner “.
In 2020, the planet experienced 28 shortest days in the last 50 years. The United Nations International Telecommunication Union began adding leap seconds sometime in June or December. The first leap second was added in 1972, followed by 26.
According to Ars Technica, the clock ticks from 23:59:59 to 23:59:60 to 00:00:00 in one leap second. The average “leap second” has caused technical problems in the past: A leap second feature added in 2012 caused crashes on Reddit, Gawker and Australian airline Qantas. In 2017, it advanced to a leap second from Cloudflare.
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