Refined value for velocity of light, c, was reported by Time, New York in their issue of 4 December 1972 as: 299.7924562 metre/second; and I attempted to define in term for measure of length Unit,METRE to be the distance traversed by light during 77.1627095 pico-metric second (Refer: The Metric Second; ISI Bulletin, Vol 25, No.4, 1973 April - a publication of Bureau of Indian Standards, New Delhi).
Regards,
Brij Bhushan Vij<[EMAIL PROTECTED]>
From: "James R. Frysinger" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "U.S. Metric Association" <[EMAIL PROTECTED]>
Subject: [USMA:23741] Re: Dallasnews - kilogram
Date: Tue, 03 Dec 2002 09:44:08 -0500
John Nichols wrote:
>
> I thought someone found that c is not constant recently but is slowing up
> like me.
>
> Just a thought.
And still a fairly new hypothesis as I understand it, John. This is far
from being widely accepted. However, the change of other constants (such
as G, the gravitational constant) are fairly widely believed to be
changing very slowly over time; that comes from the general theory of
relativity and it relates to the cosmological constant that Einstein
suggested, then removed, then wished he hadn't. Put it up there with the
recent "dark energy" hypothesis. I think the two are related, actually.
For practical purposes, though, the effect on SI units is vanishingly
small. We would be overly proud to consider that our standards will
stand for millions of years.
Jim
--
James R. Frysinger
Lifetime Certified Advanced Metrication Specialist
Senior Member, IEEE
http://www.cofc.edu/~frysingj
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