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- Newsgroups: alt.cesium
- Path: sparky!uunet!snorkelwacker.mit.edu!bloom-picayune.mit.edu!krpeters
- From: krpeters@athena.mit.edu (Karl R Peters)
- Subject: Re: Time and our heroic element
- Message-ID: <1992Sep14.155955.24082@athena.mit.edu>
- Sender: news@athena.mit.edu (News system)
- Nntp-Posting-Host: m11-113-2.mit.edu
- Organization: Massachusetts Institute of Technology
- References: <1992Sep12.045918.13611@cco.caltech.edu> <1992Sep13.141835.14145@athena.mit.edu> <1992Sep13.220334.501@cco.caltech.edu>
- Date: Mon, 14 Sep 1992 15:59:55 GMT
- Lines: 28
-
- In article <1992Sep13.220334.501@cco.caltech.edu> peri@cco.caltech.edu (Michal Leah Peri) writes:
- >krpeters@athena.mit.edu (Karl R Peters) writes:
- >
- >>In article <1992Sep12.045918.13611@cco.caltech.edu> peri@cco.caltech.edu (Michal Leah Peri) writes:
- >>>gilligan@bldrdoc.gov (Jonathan M. Gilligan) writes:
- >>>
- >>>>The meter is defined as the distance light travels in
- >>>>1/299,792,458 of a second in a vacuum in an inertial reference frame.
- >>>
- >>>And just where do they get an inertial reference frame for measuring
- >>>the speed of light in a vacuum???
- >>>
- >>> -- Michal
- >>>
- >
- >>Inertial reference frame: Any frame that is not accelerating.
- >>Thus, the surface of the earth is OK - provided that the earth's spin
- >>is not enough to mess up your results.
- >
- >Aye there's the rub! The earth's surface is decidedly *not* inertial.
- >
- > -- Michal
- >
-
- It's close enough - gravity is countered by the upward force of the earth's surface against
- your apparatus, and the earth's spin and sun's gravitation are negligible.
-
-
-