Malcolm Hoar wrote:
In article .com, "Harry K" wrote:

Harry K wrote:
Don Kelly wrote:
----------------------------
"Dave Smith" wrote in message
...

snip


(Fahrenheit zero is based on the commonsense measure of the freezing point
of a saturated salt solution which everyone has on hand, and boiling point
is 180 degrees above the freezing point of "pure" water. Completely
logical
of course )


snip
Don Kelly move the X to answer

Correction: the F scale was based the freezing point of that solution
and set at 32 degrees. Then 100 was selected as the normal human body
temp, or that is what I heard, not sure). Just why they set the
freezing point at 32 vice 0 escapes me.

Harry K

Oops. Correction to the correction. You are correct. I just can't
come up with how the 0F mark was arrived at.

http://chem.oswego.edu/chem209/Misc/fahrenheit.htm

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Thanks. That took me back to school days in the 40s.

Harry K