Date: Thu, 16 Mar 2000 23:42:28 +0000 From: Mark Ovens <mark@ukug.uk.freebsd.org> To: Greg Lehey <grog@lemis.com> Cc: Brett Taylor <brett@peloton.runet.edu>, Paul Richards <paul@originative.co.uk>, chat@freebsd.org Subject: Re: Useful Metric Conversions Message-ID: <20000316234228.C248@parish> In-Reply-To: <20000316141306.C2841@mojave.worldwide.lemis.com>; from grog@lemis.com on Thu, Mar 16, 2000 at 02:13:06PM -0800 References: <20000316182207.C235@parish> <Pine.BSF.4.10.10003161417340.57499-100000@peloton.runet.edu> <20000316215216.A248@parish> <20000316141306.C2841@mojave.worldwide.lemis.com>
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On Thu, Mar 16, 2000 at 02:13:06PM -0800, Greg Lehey wrote:
> On Thursday, 16 March 2000 at 21:52:16 +0000, Mark Ovens wrote:
> > On Thu, Mar 16, 2000 at 02:18:29PM -0500, Brett Taylor wrote:
> >> Hi,
> >>
> >> On Thu, 16 Mar 2000, Mark Ovens wrote:
> >>
> >>> On Thu, Mar 16, 2000 at 02:10:59AM +0000, Paul Richards wrote:
> >>
> >>>>> 453.6 graham crackers = 1 pound cake
> >>>>
> >>>> I'm not getting that one at all?
> >>>>
> >>>
> >>> Neither do I. I didn't dream them up, I just posted them.
> >>
> >> 454 grams to the pound (roughly).
> >
> > Yes, I knew that. What I don't know is what "graham crackers" are, or
> > is it just word-play on gram?
> >
> >> Why you'd compare a mass to a weight is
> >> anyone's guess, but that's probably just the physics in me talking. :-)
> >>
> >
> > Both the imperial and metric systems mix up mass and weight. I was
> > always explained to me that this is because the average non-technical
> > person can't understand the difference; buting 1kg of sugar is easy to
> > grasp, but 9.81 Newtons?
>
> The metric system made a distinction between weight and mass right
> from the beginning. The gram was the unit of mass,
^^^
is
> not weight; the
> unit of weight was the bary, which dropped out of use.
>
In the SI system the Newton is the unit of weight, weight being the
force of gravity exerted on a mass.
> Greg
> --
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