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
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