Disclaimer: By posting on this web site it is accepted that you have agreed to our Terms. Please DO NOT publish copyrighted material/pictures without the owner’s permission, you are liable for any costs incurred.


Results 1 to 7 of 7
  1. #1
    Moderator
    Join Date
    Aug 2010
    Location
    Marikina City
    Posts
    26,785
    Rep Power
    150

    Thumbs up US scientists claim world's most accurate clock

    US scientists said Thursday they have built the world's most precise clock, whose ticking rate varies less than two parts in one quintillion, or 10 times better than any other.

    The clock, made from the element ytterbium, could be used for technological advancements beyond timekeeping, such as navigation systems, magnetic fields and temperature.

    "The stability of the ytterbium lattice clocks opens the door to a number of exciting practical applications of high-performance timekeeping," National Institute of Standards and Technology physicist, and co-author of the study revealing the clock, Andrew Ludlow said in a statement.

    While mechanical clocks use the movement of a pendulum to keep time, atomic clocks use an electromagnetic signal of light emitted at an exact frequency to move electrons in cesium atoms.

    The physicists built their ytterbium clocks using about 10,000 rare-earth atoms cooled to 10 microkelvin (10 millionths of a degree above absolute zero) and trapped in an optical lattice made of laser light.

    Another laser that "ticks" 518 trillion times per second triggers a transition between two energy levels in the atoms. The clock's high stability is owed to the large number of atoms.

    The new clocks can achieve precise results very quickly.

    Technicians must average the current US civilian time standard, the NIST-F1 cesium fountain clock, for about 400,000 seconds (about five days) to obtain its best performance.

    But the new ytterbium clocks can achieve that same result in about one second of averaging time.

    The study was published in the journal Science

    Source:-
    http://www.gmanetwork.com/news/story...section_banner


  2. #2
    Moderator
    Join Date
    Aug 2010
    Location
    Marikina City
    Posts
    26,785
    Rep Power
    150
    I wonder how they measured it's accuracy ?


  3. #3
    Trusted Member jake's Avatar
    Join Date
    Sep 2012
    Location
    philippines
    Posts
    1,868
    Rep Power
    130
    The MOD should think about purchasing one!

    http://filipinaroses.com/showthread....speaking+clock


  4. #4
    Trusted Member stevewool's Avatar
    Join Date
    Feb 2010
    Location
    derbyshire
    Posts
    18,980
    Rep Power
    150
    and where did the get the original time from too, was that right and if so why bother


  5. #5
    Moderator
    Join Date
    Aug 2010
    Location
    Marikina City
    Posts
    26,785
    Rep Power
    150
    I wish someone would invent a clock that works to Philippine time

    I might have half a chance then


  6. #6
    Trusted Member stevewool's Avatar
    Join Date
    Feb 2010
    Location
    derbyshire
    Posts
    18,980
    Rep Power
    150
    is there such a thing as Philippine time


  7. #7
    Moderator Arthur Little's Avatar
    Join Date
    Oct 2008
    Location
    City of Perth, Scotland
    Posts
    24,230
    Rep Power
    150
    Quote Originally Posted by Terpe View Post

    US scientists said Thursday they have built the world's most precise clock
    , Peter ... I'd have to dispute the Yanks' claim. IMO ... the world's most reliable clock is, surely a COCK ... in the shape of the Filipino rooster! !


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Qatar World Cup: £3m corruption claim
    By les_taxi in forum Football
    Replies: 18
    Last Post: 10th June 2014, 14:18
  2. Death Clock
    By Arthur Little in forum Loose Talk, Chat and Off Topic
    Replies: 9
    Last Post: 8th May 2014, 01:30
  3. The clock is now ticking .....
    By Bluebirdjones in forum UK VISA/British Citizenship
    Replies: 40
    Last Post: 16th March 2009, 16:01

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Filipino Forum : Philippine Forum