----- Original Nachricht ----
Von: Harry Veeder <hveeder...@gmail.com>
An: vortex-l@eskimo.com
Datum: 21.11.2011 05:49
Betreff: [Vo]:Modern theories of boiling
more...
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> http://www.hps.cam.ac.uk/people/chang/boiling/discussion3.htm
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Interesting is the discussion that in history they made thermometer and
calibrated them with boiling water and used these thermometers to measure the
boiling point ;-).
This seems to be stupid, but it is true.
It is not unique to boiling research it applies to all techniques.
I have learned how to measure a voltage precisely with an inaccurate weathstone
bridge, by doing two measurements with different orientation and averaging the
results. More precise measurements are possible by refining this method and
doing more calculations.
If we look to the history of science and technique then we will see: In the
early beginnings there where no precise tools and no precise measuring
instruments. How are precise instruments made?
Precise instruments and tools are made from lesser precise instruments and
tools by developing a theory and improving instruments and tools iteratively.
Contrary to common believe, in the scientific process accurate tools are not
made from more accurate tools.
Accurate tools are made from lesser accurate tools! Its a iterative and
recursive process that includes development of precise theorys and precise
definitions. This is a proofable historical fact.
If Professor Chang refers to historical researchers and gets the same results,
this is not surprising:
These researchers did not have a precise definition of "boiling point".
If he works without a precise definition, then he will of course not get
precise results.
It must also been said, the term "boiling point" is ill formed. There is no
precise boiling point, because there is no precise definition of boiling.
It would be better to use the term "condensation point".
