A low cost temperature test chamber

[Paul Perry]

At 10:30 AM 10/05/99 +0200, you wrote:
>A low cost temperature test chamber.

....good one m.c. ......

when I was a dogsbody at an atmospheric physics lab, we had a
home-made 'temperature step function generator' consisting of 2
tanks of water with coils of copper wire in them, and a valve
to switch between the air streams pumped thru the pipes.
This calibrated a resistance wire thermometer, also an open air plate capacitor
 used to examine micro fluctuations in air temp and humidity, if you
recorded this
at 2 points in a paddock, and correlated the fine structure, 
you could work out the wind speed from one to the other
(but what they were really interested in was the autocorrelation function,
which gives info on eddy structure, as you see the same bits of air
structure reappear
as it swims around)

paul perry melbourne australia