Dear Pat, (01)
> > Gunther,
> >
> > Maximum allowable temperature is a disposition of the object.
> > The object may reach never reach that temperature, or may reach
> it,
> > even
> > exceed it, but that does not have much, in itself, to do with the
> > property.
> >
> > The property is something like: other things being equal, if you
> > stay below
> > this temperature the object (more often, a type of object) will
> > operate as
> > specified - if you go above it then it may not.
> >
> > (Allowable is probably not the best example, as one could try and
> > cash this
> > out by saying that one is defining two states that the object can
> be
> > in -
> > below (or equal) to the maximum and above the maximum. But that
> > would ignore
> > the intention that staying within the 'allowable' range should
> > provide some
> > guarantee of normal operation.)
> >
> > So, the object has (or does not have) this property whatever its
> > actual
> > temperature.
>
> OK, but this does not contradict anything anyone has said. It is a
> property of the object, and its value is a temperature (better, it
> is
> a relationship between the object and a temperature.) (02)
MW: Exactly! And a relationship to a temperature is not a temperature. (03)
> It is,
> however,
> not the property which we commonly call 'the temperature of the
> object'. I see no problem here that needs anything special to be
> done
> or discussed. (04)
MW: I agree. But if we go back to the beginning the question was that
there are some units that only have a single quantity kind, and I was
suggesting that just as with Maximum Allowable Working Temperature, that
you can make some quantity kinds up for any unit. (05)
Regards (06)
Matthew West
Information Junction
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>
> Pat H.
>
>
> >
> > I suppose one could argue that these are not quantities at all -
> but
> > then (I
> > am told) most useful engineering measures would be excluded.
> >
> > Regards,
> > Chris Partridge
> > Chief Ontologist
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> >> -----Original Message-----
> >> From: uom-ontology-std-bounces@xxxxxxxxxxxxxxxx [mailto:uom-
> ontology-std-
> >> bounces@xxxxxxxxxxxxxxxx] On Behalf Of Gunther Schadow
> >> Sent: 29 September 2009 21:51
> >> To: uom-ontology-std
> >> Subject: Re: [uom-ontology-std] What is mass?
> >>
> >> 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)
> >>
> >> -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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