From: Fernando Cacciola (fcacciola_at_[hidden])
Date: 2001-08-30 11:22:37
----- Original Message -----
From: George A. Heintzelman <georgeh_at_[hidden]>
Sent: Thursday, August 30, 2001 12:52 PM
Subject: Re: [boost] quantity libraries
> > > From: Anatoli Tubman <anatoli_at_[hidden]>
> > >
> > >Oh come on. The question is not what is more fundamental, but what is
> > >more useful. Which makes it much trickier, because usefulness is
> > >relative. Meter is also a derived unit. This does not make it
> > >any less useful.
> > The metre is a base unit not a derived unit.
> Actually I believe the meter is now defined in terms of a number of
> wavelengths of a particular frequency of light, and the second in terms
> of the speed of light (or maybe it's the second that is defined in
> terms of a number of vibrations and the meter in terms of the speed of
> light, I forget);
The fact that metre and second are defined in terms of light properties
dosen't mean they are not base units.
They are base units all the same.
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