[MaxxxRacer]

i know one degree kelvin is one degree C.. known that for many many years....

and actually the quote supports exactly what I was saying... you say that the metal just feels cooler, not that it is cooler.. you think this because the metal will conduct the heat from our bodies much faster (pulling the heat away from us), which is true to an extent, but if you put a thermal probe on that piece of brass even with no airflow over it (just the water in it) it will show that its cooler than the water inside.

you can test it even with one of the laser temp sensors where there will be no change in temp from airflow over the sensor.. or you can take a thermistor and cover it in goop and neoprene so there is no airflow over it at all.


what your saying about the thermal conductivity properties of brass I am not arguing. "since brass has a thermal conductivity of 111 watts per meter per degree kelvin"

I am not arguing that.. but... when you apply water to the equation, the brass does not have to be thick at all to be cooled. in that example where it is several meteres thick you are saying that if you apply a heat source to one side of it and for the temp to be differet on the other side it has to be N meters thick.. well that example DOES NOT apply in this situation..

The barb is being cooled all around.. the barb will be as cool as it is on the outside as it is on the inside. so if you strap the sensor to the inside of the brass barb with the water, it will still give you low temps because of the lower temperature of the brass. So you see, the barb is not jsut cool on the outside, its cool on EVERY side... I hope this makes sense to you now...


Butcher: Im pretty sure the compunurse uses a thermistor.. Pretty much all the inexpensive temp gaugues use them.