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Thread: Did you know that you were about to experience a long weekend?

  1. #1
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    Default Did you know that you were about to experience a long weekend?


    'Leap second' makes weekend a little longer

    By Chris Wickham, Reuters




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    LONDON - The world is about to get a well-earned long weekend but don’t make big plans because it will only last an extra second.
    A so-called ’leap second’ will be added to the world’s atomic clocks as they undergo a rare adjustment to keep them in step with the slowing rotation of the earth.
    To achieve the adjustment, on Saturday night atomic clocks will read 23 hours, 59 minutes and 60 seconds before moving on to midnight Greenwich Mean Time.
    Super-accurate atomic clocks are the ultimate reference point by which the world sets its wrist watches.
    But their precise regularity - which is much more constant than the shifting movement of the earth around the sun that marks out our days and nights - brings problems of its own.
    If no adjustments were made, the clocks would move further ahead and after many years the sun would set at midday. Leap seconds perform a similar function to the extra day in each leap year which keeps the calendar in sync with the seasons.



    The grandly named International Earth Rotation and Reference Systems Service (IERS) based in Paris, is responsible for keeping track of the gap between atomic and planetary time and issuing international edicts on the addition of leap seconds.
    “We want to have both times close together and it’s not possible to adjust the earth’s rotation,” Daniel Gambis, head of the Earth Orientation Centre of the IERS, told Reuters.
    Gambis said the turning of the earth and its movement around the sun are far from constant.
    In recent years a leap second has been added every few years, slightly more infrequent than in the 1970s despite the long-term slowdown in the earth’s rotation caused by tides, earthquakes and a host of other natural phenomena.
    Adjustments to atomic clocks are more than a technical curiosity.
    A collection of the highly-accurate devices are used to set Coordinated Universal Time which governs time standards on the world wide web, satellite navigation, banking computer networks and international air traffic systems.
    There have been calls to abandon leap seconds but a meeting of the International Telecommunications Union (ITU), the U.N. agency responsible for international communications standards, failed to reach a consensus in January.
    “They decided not to decide anything,” says Gambis, adding that another attempt will be made in 2015.
    Opponents of the leap second want a simpler system that avoids the costs and margin for error in making manual changes to thousands of computer networks. Supporters argue it needs to stay to preserve the precision of systems in areas like navigation.
    Britain’s Royal Astronomical Society says the leap second should be retained until there is a much broader debate on the change.
    “This is something that affects not just the telecom industry,” said RAS spokesman Robert Massey. “It would decouple time-keeping from the position of the sun in the sky and so a broad debate is needed.”
    Time standards are important in professional astronomy for pointing telescopes in the right direction but critical systems in other areas, not least defence, would also be affected by the change.
    “To argue that it would be pain free is not quite true,” Massey said.
    A decision is not urgent. Some estimate that if the current arrangement stays, the world may eventually have to start adding two leap seconds a year. But that is not expected to happen for another hundreds years or so.
    In the meantime, Massey plans to use his extra second wisely this weekend. “I’ll enjoy it with an extra second in bed,” he said.



    ... don't spend it all in one place.
    Be there or be square. Only I can do both!

    "My lord, I will use them according to their desert."

    "God's bodykins, man, much better: use every man
    after his desert, and who should 'scape whipping?"

    Veteran of the Great Irisch Moos Campaign of 2008-09

  2. #2
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    Well isn't that loverly? Yesterday it was 118F at Horton Dam Kansas. It was only 106 here in Lawrence. The 118f matched the U.A.E. as the hottest place on earth yesterday. And now you tell me we have to endure this stuff for an extra second? Say it isn't so.

    Cheers, Todd

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    I can finally finish that novel.

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    Quote Originally Posted by Oblique Human View Post
    I can finally finish that novel.
    Brilliant.

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    Quote Originally Posted by Oblique Human View Post
    I can finally finish that novel.
    Be there or be square. Only I can do both!

    "My lord, I will use them according to their desert."

    "God's bodykins, man, much better: use every man
    after his desert, and who should 'scape whipping?"

    Veteran of the Great Irisch Moos Campaign of 2008-09

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    More time to catch up on yardwork.....

  7. #7
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    did I miss it yet?

    -jim
    Zounds! Balderdash! Jumping Jehoshaphat! harumph!

    Add smileys to all of my posts. Put them where you think they should go.

    The gin, the gin, glows in the dark, glows in the dark

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    thank god it wasnt added to the work week!!!!

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    One mississippi, two mississippi, three mississippi, three mississippi, four mississippi, five mississippi ...
    Be there or be square. Only I can do both!

    "My lord, I will use them according to their desert."

    "God's bodykins, man, much better: use every man
    after his desert, and who should 'scape whipping?"

    Veteran of the Great Irisch Moos Campaign of 2008-09

  10. #10
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    That extra second of sleep really helped me out. I would have woken up exhausted without it.
    Ka-chow! Joshua
    Sir Loin of Angus - Knights of the Maillard Table and Loyal Arkolyte
    3017er "Load it like you hate it"

  11. #11
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    I blinked.

    -jim
    Zounds! Balderdash! Jumping Jehoshaphat! harumph!

    Add smileys to all of my posts. Put them where you think they should go.

    The gin, the gin, glows in the dark, glows in the dark

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