Earth sets rotational speed records

Earth recorded your shortest day ever since scientists began using atomic clocks to measure your speed rotation.

On June 29, 2022, Earth completed a rotation in 1.59 milliseconds Not less 24 hours. It’s the last of a series of earth speed records since 2020.

In general, for prolonged periods, Earth’s rotation is slowing down. Every century, the Earth takes a few milliseconds to complete a rotation (where 1 millisecond equals 0.001 seconds).

However, in this general scheme, the Earth’s rotational speed fluctuates. Overnight, the Weather report How long does the Earth take to complete one rotation? increase or decrease in fraction of a millisecondinformed the web ‘Time and date’.

Scientists who study the Earth’s rotation use the term “nice day” talk about how fast or slow the earth rotates. Day length is the difference between the the time it takes the earth to turn once on its axis and 86,400 seconds (which is 24 hours).

When increase the length of the day, the Earth rotates more slowly. When it declines and becomes a Number negativeEarth spin faster.

In recent years, the Earth has been accelerating. By 2020, he had reached his 28 days less since the beginning of precise daily measurements with atomic clocks in the 1960s. shortest day ever in 2020, it was -1.47 milliseconds on July 19.

Earth kept spinning fast in 2021, although the shortest day of the year in 2021 it was a fraction longer than in 2020.

This year, on June 29, the Earth established a new recording for him shortest day of the atomic clock era: -1.59 milliseconds. Earth is almost back to beat his record a month later, recording a nice day -1.50 milliseconds on July 26, according to measurements by the National Physical Laboratory in England.

The ordinary fluctuations of the nice day are the result of monthly orbit of the Moon around the Earth. The longer and smoother waveswith the shortest days in July or around each year, are related to the movements in the earth’s atmosphere.

The current downward trend in the duration of shortest day could be related to processes in the inner layers outside Earth, oceans, tides or weather.

The bone scientists they are unsure and try hard predictions on the nice day with more than one a year in advance.

If the rapid rotation of the Earth continues, it could lead to introduction of the first negative jump second.

This would be necessary for keep civil timewhich is based on atomic clocksat the same pace as sun timewhich is based on movement of the sun across the sky.

A negative leap second would mean that our clocks skip a secondwhich could create problems for a variety of technologies.

“I think there is a 70% chance that we are in the Minimum“to shorten the length of the day, said Leonid Zotov, an Earth rotation expert at Lomonosov University, “and we won’t need a negative leap second.”

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