On Aug 7, 12:25 pm, "Proctologically Violated©®"
wrote:
entropic3.14decay at optonline2.718 dot net; remove pi and e to reply--ie,
all d'numbuhs

"Cliff" wrote in message

...

On Mon, 06 Aug 2007 15:11:22 -0700, BottleBob
wrote:

While most dimensional metrologists know that the reference temperature
for dimensional measurements is 20 °C, very few know how or why that
temperature was chosen. Many people have thought it was, in some sense,
arbitrary. In actuality, the decision was the result of 20 years of
thought, discussion, and negotiations that resulted in the International
Committee for Weights and Measures (CIPM) unanimous adoption of 20 °C as
the reference temperature on April 15, 1931.

None of which explains "how or *why* that temperature was chosen" G.
Just who.

Sorta what I thought.
Negotiating temperature? Please, gimme a break. More fukn PhDs tryna
justify dey salary.

Proly 68 F was some sort of mean of all the industrial climates, so's shops
could basically make **** in the open air.
And, I think it's a little above the mean, reflecting the fact that back
then, you didn't have A/C, so you could heat up a shop easier than you could
cool it down.

Or mebbe it reflected an avg of climates where machined stuff was likely to
be used.
Barring cylinder liners, etc.

Musta been a long negotiation.
--
------
Mr. P.V.'d (formerly Droll Troll), Yonkers, NY

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Cliff

Isnt it 300 kelvin on the nose?