home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: alt.cesium
- Path: sparky!uunet!snorkelwacker.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!krpeters
- From: krpeters@athena.mit.edu (Karl R Peters)
- Subject: Re: Time and our heroic element
- Message-ID: <1992Sep13.141835.14145@athena.mit.edu>
- Sender: news@athena.mit.edu (News system)
- Nntp-Posting-Host: w20-575-49.mit.edu
- Organization: Massachusetts Institute of Technology
- References: <mDr-L=+@engin.umich.edu> <5509@dove.nist.gov> <1992Sep12.045918.13611@cco.caltech.edu>
- Date: Sun, 13 Sep 1992 14:18:35 GMT
- Lines: 19
-
- 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.
- (Of course, you also need a vacuum chamber)
- In orbit around the earth is bad, but I think in orbit around the sun would
- be OK due to the relatively low acceleration at 93 mil miles out.
-
-