Gerhard Fiedler wrote:
> look at http://physics.nist.gov/cuu/Units/units.html where they tell a bit
> of the SI story (it's one of the top links of a web search on "units si",
> so it's not exactly hard to find anytime you might need it :). your
> handbook seems outdated.
> 
> the difference is, as i see it, that Kelvin is an absolute unit, and
> therefore a "real" physical unit, and has no ¡. whereas the various "human"
> temperature scales are just that, and so they get the traditional ¡ in
> front of them.
> 
> ge

so I was right since the beginning. :))

Degree means basically rotation in a scale, and so it was in the old
thermometers, a torsion device based on temperature.  Each one build
its own scale, so entitled it with his name. A whole degree in each
one was meaning different temperatures, based on the way it was
build.  Different from Kelvin that is an absolute physical unit.
I use a thermometer microchip that gives me Volts/Kelvin, easy,
pure, no crazy conversions or factor tables.
Wagner