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- Newsgroups: alt.cesium
- Path: sparky!uunet!news.larc.nasa.gov!lynx.larc.nasa.gov!goodrich
- From: goodrich@lynx.larc.nasa.gov (Mike Goodrich)
- Subject: Re: Time and our heroic element
- Message-ID: <BuD831.DKB@news.larc.nasa.gov>
- Sender: news@news.larc.nasa.gov (USENET Network News)
- Organization: NASA Langley Research Center, Hampton, VA USA
- References: <18mi2eINN8e3@agate.berkeley.edu> <mDr-L=+@engin.umich.edu> <1992Sep10.125343.12926@athena.mit.edu>
- Date: Thu, 10 Sep 1992 13:57:01 GMT
- Lines: 30
-
- In article <1992Sep10.125343.12926@athena.mit.edu>, krpeters@athena.mit.edu (Karl R Peters) writes:
- |> In article <mDr-L=+@engin.umich.edu> positron@engin.umich.edu (Jonathan Scott Haas) writes:
- |> >In article <18mi2eINN8e3@agate.berkeley.edu> gezelter@sam.cchem.berkeley.edu (Dan Gezelter) writes:
- |> >>According to the National Institute of Standards and Technology
- |> >>(formerly NBS):
- |> >>
- |> >> The second is defined as the duration of 9,192,631,770 periods of
- |> >>the radiation corresponding to the transition between the two
- |> >>hyperfine levels of the ground state of cesium 133.
- |> >>
- |> >
- |> >You sure about this? I'm almost certain that a second is defined as the
- |> >amount of time it takes light to travel 299,xxx,xxx meters in a vacuum.
- |> >
- |> >--
- |> >__/\__ Jonathan S. Haas | Jake liked his women the way he liked
- |> >\ / University of Michigan | his kiwi fruit: sweet yet tart, firm-
- |> >/_ _\ positron@engin.umich.edu | fleshed yet yielding to the touch, and
- |> > \/ | covered with short brown fuzzy hair.
- |>
- |> No, actually the meter is defined by the distance travelled by light in
- |> 1/299,xxx,xxx of a second.
- |>
-
-
- NO, actually the meter is *defined* as a certain number of wavelengths of a
- particular atomic transition of Krypton 86 ...
-
-
- ...mike
-