Temperature Change affecting pitch

[Newton Hunt]

Steve, et al,

Ok, ok, you are right, and not so right.

Temperature can change tuning if heat is direct onto the strings as
from stage lights, sunlight or freezing cold from outside.

But what was under discussion was a fairly stable environment but
where the temperature was allow to drop then allowed to rise. 
Within a eight to ten degree range I think, given the environment,
will make little difference on pitch change but because a drop in
temperature is coupled with a change in humidity then the humidity
must be accounted for and very likely the humidity change effects
pitch more than the change in temperature.

I have had to tune through too many pitch changes because the stage
crew opened the doors for a load in where the temperature changed
but little but the humidity changed by 30 percentage point within a
couple of minutes.  Then it takes hours to come back down.  So what
do you do? COntinue tuning as if nothing happened.  Not my problem,
they did the scheduling and I did my work.

		Newton