On Oct 2, 2009, at 2:40 AM, Matthew West wrote: (01)
> Dear Gunther,
>
>> 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)
>
> 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. (02)
No, you wouldn't. Analogy: Q: which heights are maximum heights? A:
any height that is specified to be a maximum height is a maximum
height. Q: But which heights can *possibly* be a maximum height? A:
Any height *could* be a maximum height. (Possible exception: zero.) (03)
> I
> don't think that makes sense. (04)
It makes no sense because the question is senseless. (05)
Pat (06)
> What makes more sense is that maximum
> allowable working temperature is a kind of property that makes
> reference
> to a particular temperature.
>
> Regards
>
> 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/
>
> This email originates from Information Junction Ltd. Registered in
> England and Wales No. 6632177.
> Registered office: 2 Brookside, Meadow Way, Letchworth Garden City,
> Hertfordshire, SG6 3JE.
>
>
>
>>
>> -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
>>
>>
>> _________________________________________________________________
>> Message Archives: http://ontolog.cim3.net/forum/uom-ontology-std/
>> Subscribe: mailto:uom-ontology-std-join@xxxxxxxxxxxxxxxx
>> Config/Unsubscribe: http://ontolog.cim3.net/mailman/listinfo/uom-
>> ontology-std/
>> Shared Files: http://ontolog.cim3.net/file/work/UoM/
>> Wiki: http://ontolog.cim3.net/cgi-bin/wiki.pl?UoM_Ontology_Standard
>>
>
>
> _________________________________________________________________
> Message Archives: http://ontolog.cim3.net/forum/uom-ontology-std/
> Subscribe: mailto:uom-ontology-std-join@xxxxxxxxxxxxxxxx
> Config/Unsubscribe: http://ontolog.cim3.net/mailman/listinfo/uom-ontology-std/
> Shared Files: http://ontolog.cim3.net/file/work/UoM/
> Wiki: http://ontolog.cim3.net/cgi-bin/wiki.pl?UoM_Ontology_Standard
>
> (07)
------------------------------------------------------------
IHMC (850)434 8903 or (650)494 3973
40 South Alcaniz St. (850)202 4416 office
Pensacola (850)202 4440 fax
FL 32502 (850)291 0667 mobile
phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes (08)
_________________________________________________________________
Message Archives: http://ontolog.cim3.net/forum/uom-ontology-std/
Subscribe: mailto:uom-ontology-std-join@xxxxxxxxxxxxxxxx
Config/Unsubscribe: http://ontolog.cim3.net/mailman/listinfo/uom-ontology-std/
Shared Files: http://ontolog.cim3.net/file/work/UoM/
Wiki: http://ontolog.cim3.net/cgi-bin/wiki.pl?UoM_Ontology_Standard (09)
|