World's most accurate clock...

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  1. #1

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    World's most accurate clock...

    It must be a slow news day today, the Telegraph (UK broadsheet) has a small article on the JILA atomic clock:

    http://www.telegraph.co.uk/earth/mai...ciclock114.xml

  2. #2
    Member Bruce Reding's Avatar
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    Re: World's most accurate clock...

    Quote Originally Posted by roba View Post
    It must be a slow news day today, the Telegraph (UK broadsheet) has a small article on the JILA atomic clock:

    http://www.telegraph.co.uk/earth/mai...ciclock114.xml
    Thanks, Robert! Very cool stuff.

    I had the good fortune of visiting the NIST labs in Boulder for a number of years in succession (a fiber optics seminar I used to attend yearly). I would always find time to wander off into the time standards part of the lab where they were building the current Cesium fountain clock. Super neat technology, and it was fun chatting with the researchers. The point of the fountain approach was to reduce the speed of the atoms, thereby reducing doppler broadening of their emissions. This takes it a step further by nearly immobilizing the atoms. It's interesting to speculate how far accuracy can be taken.

  3. #3
    Member ppaulusz's Avatar
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    Re: World's most accurate clock...

    Quote Originally Posted by roba View Post
    It must be a slow news day today, the Telegraph (UK broadsheet) has a small article on the JILA atomic clock:

    http://www.telegraph.co.uk/earth/mai...ciclock114.xml
    Fascinating! Thanks for the link!
    Referring to the specifications without being aware of the applied technologies is the telltale sign of incompetence!

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  5. #4
    rex
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    Cool clock!!! Now where can I buy one???? :~) nt

    nt

  6. #5
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    Re: World's most accurate clock...

    WOW. 430 trillion "ticks" per second! Thanks for the link Robert

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    Re: World's most accurate clock...

    Very interesting...thanks for sharing! Something more accurate than caesium 133

  8. #7
    Member ppaulusz's Avatar
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    Re: World's most accurate clock...

    Quote Originally Posted by jdsin View Post
    ...Something more accurate than caesium 133
    It's about time! I was not happy with the timekeeping of caesium 133...
    Referring to the specifications without being aware of the applied technologies is the telltale sign of incompetence!

  9. #8
    Member Eeeb's Avatar
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    Re: World's most accurate clock...

    Physicists seem to be in an accuracy race!

    Reuters is reporting on several US efforts. Evidently one reached 1 second per 400,000,000 years accuracy two years ago and are hoping to improve on it this year.

    Eta is trying to figure out how to put cryogenic capabilities into a watch in order to use the technology... ... I suspect they could fit it into that Welder that was just posted!
    "Forever is composed of nows." - Emily Dickinson

    "The watch has to be surrounded by a history.
    You need more than just a great design. You need to create an atmosphere around the product.
    Who is the company behind it? Why are they using this material?
    People need to be able to identify the watch with themselves. It's based on emotion." - Ralph Furter

    ...that's just my opinion and I've been wrong before and will be again and might be now!

  10. #9
    CFR
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    Re: World's most accurate clock...

    Quote Originally Posted by Bruce Reding View Post
    I had the good fortune of visiting the NIST labs in Boulder for a number of years in succession (a fiber optics seminar I used to attend yearly).
    Just before I moved away from DC, I took the USNO tour. If I remember correctly, it was offered only once a month, starting around dusk. It was one of my favorite visits to a government facility/activity -- and I went to a lot of places (some obscure) while I lived there. If it's still offered, I'd highly recommend it.

  11. #10
    Member Bruce Reding's Avatar
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    Re: World's most accurate clock...

    Quote Originally Posted by CFR View Post
    Just before I moved away from DC, I took the USNO tour. If I remember correctly, it was offered only once a month, starting around dusk. It was one of my favorite visits to a government facility/activity -- and I went to a lot of places (some obscure) while I lived there. If it's still offered, I'd highly recommend it.
    I tried to visit once, but they were not running the tour on the weekend that I was there. One day ...

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