If the Earth’s rotation loses its compatibility with atomic clocks, one leap second can be added or subtracted so that the calculation is not disturbed.
Scientists at the International Earth Rotation and Reference System Service measure the duration of a day exactly as a star passes through a particular place in the sky each day.
2021 It will be a shorter year than usual: ScientistsIf the Earth’s rotation loses its compatibility with atomic clocks, one leap second can be added or subtracted so that the calculation is not disturbed.Adam Smith the Independent.
Scientists have discovered that the planet has been rotating faster than its normal speed over the past 50 years, which may require a ‘negative leap second’ this year, meaning that 2021 will be an unusually short year. ۔
According to scientists, the speed of the Earth’s rotation is affected by a number of factors, including the movement of the molten part of its center, the ocean and the atmosphere.
According to astrophysicist, science communicator Graham Jones, and date and time scientist Constantine Beacos, the Earth’s rapid rotation is expected to reduce the average day time in 2021 to zero point five milliseconds, compared to 86,400 seconds. Which is usually 24 hours.
Scientists at the International Earth Rotation and Reference System Service (IERS) measure the duration of a day exactly as a star passes through a particular place in the sky each day.
These principles were first introduced in 1972 and have increased by only 27 leap seconds a year since then.
Jones and Beacos write: “Earth’s speed is fast and that’s why there has been no need to increase leap seconds since 2016.”
if the Earth’s rotation continues to accelerate, we may need a negative leap second at any time.he said. If that happened then our clocks would have to go back a second to keep up with the Earth’s rotation.
These leap seconds have no practical significance in our daily lives, but in some areas such as astronomy, navigation, space flight and computer networks, the accuracy of calculating and tracking steps every second can be extremely important.Peter Wieberley, a physicist at the National Physics Laboratory in the UK, told the Telegraph: “It is quite possible that a negative leap second would be needed if the Earth’s rotation rate were to increase further, but it would be premature to say that It’s really possible. “
The future of leap seconds is being discussed at the international level, and it is possible that the negative leap second may not be the reason for the end of the leap second,he said.
Some scientists at the International Telecommunication Union have also speculated that it would be better to widen the time gap and add a “leapover” whenever needed.
LiveScience says that while this may reduce barriers to telecommunications networks, astronomers will need to make adjustments until the leapover is included.