NewsWorldWhy does the Earth spin faster and what effects...

Why does the Earth spin faster and what effects does it have on people? – News telecinco

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Scientists have discovered that the planet Earth rotates faster, thus recording the shortest day since atomic clocks exist to measure the speed of rotation. It was on June 29, 2022, when it was recorded that the Earth made a complete rotation in 1.59 milliseconds less in 24 hours, the latter becoming a series of speed records for the Earth since 2020. Usually, during periods prolonged, the Earth’s spin slows down. Every century, the Earth takes a couple of milliseconds or so to complete one rotation (where 1 millisecond equals 0.001 seconds). However, within this general pattern, the Earth’s rate of spin fluctuates. From one day to the next, the time it takes for the Earth to complete one rotation increases or decreases by a fraction of a millisecond, reports timeanddate.com. ‘Day Length’ Scientists who study the Earth’s rotation use the term “day length.” day” to talk about how fast or slow the Earth spins. The length of the day is the difference between the time it takes for the Earth to rotate once on its axis and 86,400 seconds (which is 24 hours). As the length of the day increases, the Earth spins more slowly. When it is decreasing and becomes a negative number, the Earth spins faster. In recent years, the Earth has been speeding up. In 2020, it had reached its shortest 28 days since accurate daily measurements with atomic clocks began in the 1960s. The shortest day of all in 2020 was -1.47 milliseconds on July 19. The Earth continued to rotate rapidly in 2021, although the shortest day of the year in 2021 was a fraction longer than in 2020. This year, on June 29, Earth set a record for the shortest day of the atomic clock era: -1, 59 milliseconds. Earth almost broke its record again a month later, recording a day length of -1.50 milliseconds on July 26, according to measurements from the National Physical Laboratory in England. Influencing oceans, tides, or even weather Fluctuations Ordinary variations in day length are the result of the Moon’s monthly orbit around the Earth. The longest and smoothest waves, with the shortest days in or around July each year, are related to movements in the Earth’s atmosphere. The current downward trend in the length of the shortest day could be related to processes in the internal or external layers of the Earth, the oceans, the tides or even the climate. Scientists aren’t sure and are struggling to make day length predictions more than a year in advance. It could create problems for a variety of technology If the Earth’s rapid rotation continues, it could lead to the introduction of the first leap second negative. This would be necessary to keep civil time, which is based on atomic clocks, in step with solar time, which is based on the Sun’s movement across the sky. A negative leap second would mean our clocks skip a second. , which could create problems for a variety of technologies. “I think there’s a 70 percent chance that we’ll be at the minimum” of shortening day length, said Leonid Zotov, an Earth rotation expert at Lomonosov University, “and we won’t need a negative leap second.”

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