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Re: [uom-ontology-std] What is mass?

To: "'uom-ontology-std'" <uom-ontology-std@xxxxxxxxxxxxxxxx>
From: "Matthew West" <dr.matthew.west@xxxxxxxxx>
Date: Fri, 2 Oct 2009 08:40:14 +0100
Message-id: <4ac5ae89.0707d00a.5f9e.0090@xxxxxxxxxxxxx>
Dear Gunther,    (01)

> Matthew West wrote:
> > Dear Ingvar,
> >
> > This sounds like an interesting challenge.
> >
> >> I am as aware of the contents of VIM as of the SI brochure, and
> >> your
> >> "n.b." makes exactly my point. What you might call "newton-meter
> as
> >> a unit
> >> alone", I prefer to call "nominal newton-meter". However, note
> that
> >> only
> >> some units can be called nominal units and tied to more than one
> >> kind-of-quantity; many units are unambiguously tied only to one
> >> kind-of-quantity.
> >
> > Could you give me a unit (or two) that you think only applies to
> one
> > kind-of-quantity, and I'll see if I can identify another?
> >
> > Engineering is full of things like Maximum Allowable Working
> > Temperature, which is certainly not a temperature (try measuring
> it with
> > a thermometer).
> 
> 
> Why is maximum allowable temperature not a temperature? Just
> because
> it isn't realized? It is a temperature specification. It is a
> quantity
> even if it doesn't exist anywhere at any particular moment in time.
> 
> But of course that is another issue and I still agree that a
> maximum
> allowable temperature of this machine can not be well compared with
> the water temperature of my pool -- but then they can if the
> machine
> is meant to go into my pool (which I don't have)    (02)

MW: For maximum allowable working temperature to be a type of
temperature you would have to be able to say which temperatures were
maximum allowable ones and which  were just ordinary temperatures. I
don't think that makes sense. What makes more sense is that maximum
allowable working temperature is a kind of property that makes reference
to a particular temperature.    (03)

Regards    (04)

Matthew West                            
Information  Junction
Tel: +44 560 302 3685
Mobile: +44 750 3385279
matthew.west@xxxxxxxxxxxxxxxxxxxxxxxxx
http://www.informationjunction.co.uk/
http://www.matthew-west.org.uk/    (05)

This email originates from Information Junction Ltd. Registered in
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> 
> -Gunther
> 
> 
> --
> Gunther Schadow, M.D., Ph.D.
> gschadow@xxxxxxxxxxxxxxx
> Associate Professor           Indiana University School of
> Informatics
> Regenstrief Institute, Inc.      Indiana University School of
> Medicine
> tel:1(317)423-5521
> http://aurora.regenstrief.org
> 
> 
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