David, (01)
Temperature is not at all defined by the measurable processes you
mention. Those happen to be means of measuring temperature through
models which relate observable processes to a phenomenon of interest,
namely temperature. The models may rest on more or less illustrious
theories, e.g. laws of thermodynamics versus concept of hardness in
material science. The scale or reference system for relating
coordinates to measurements within the model may be more or less
absolute in those theories, e.g. absolute zero versus spatial or
temporal coordinate systems. Nevertheless, I would contend that they
are always present where units of measure are being employed
meaningfully (or should I say, realistically). (02)
Josh (03)
On Aug 7, 2009, at 4:32 PM, David Leal wrote: (04)
> Temperature is not merely a
> phenomenon defined by the differential thermal expansion of mercury
> and
> glass or the behaviour of electrons in a thermocouple junctions,
> because we
> have the laws of thermodynamics. (05)
_________________________________________________________________
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 (06)
|