Re: virus: RE: The Speed of Light

Jason McVean (
Fri, 15 Nov 96 10:47:15 MST

JPS said:
> Question: how long is a meter? Do we know the length of a meter
> as well as we know the speed of light? The above value suggests
> that we know how long a meter is on the order of 1 in a million.
> But the meter was always defined to be the length of some metal
> bar in Paris. How crude! Here's a better approach: define the

I believe the length of a meter is now defined as so many
wavelengths of such and such an electronic transition. I can find
the information if desired. I'm not sure this really affects what
you were saying, beyond saying that we have a much more precise
definition that we previously did.


Dept. of Physics and Astronomy University of Calgary

"I am as close to you as the veins in your neck when I say to you, in
my whispering lisp, I, too, began as a boy." Mark Richard - Fishboy