Assuming the same material, does pipe shape matter?

[Steddy]

The only objective measurement of temperature is with a thermometer.
Studies have shown only infinitesimal differences in measured temperature due to length of shank/stem

I’m just spitballing here,
Short pipe vs long pipe: is it possible the smoke is the same temperature but you are getting more heat from the ember in a short pipe?

Let me frame it differently, I’m guessing smoke consists of particulate, moisture, and air. Is it possible the air is at a different temperature and changes temperature at a different rate than the particulate and moisture?

 

[dogparkpiper]

People will say that a much longer pipe (churchwarden) has the potential to deliver cooler smoke.

And then people will say “you can get hot smoke from any length of a pipe” - Bad technique means even a very long pipe can deliver smoke that’s too hot.

And some people will say “you can get a cool smoke from a short pipe” - this is about great technique.

 

[mingc]

A pipe with an aesthetic flaw that otherwise smokes well is a disappointment. I have a Castello that smokes well but has a light gap between the stem and the shank. I never pick it up. I should have returned it but I was too lazy to send it back to Italy.

 

[Waning Embers]

A pipe with an aesthetic flaw that otherwise smokes well is a disappointment.

I feel the same way.

 

[anotherbob]

I wonder if the reason for this widespread belief is actually based on the amount of smoke literally "in your face" making the person perceive the smoke as hotter or cooler? I can't imagine the smoke cooling much based on travelling a few more inches of pipe stem, unless you've got a water jacket wrapped around the stem (and if anybody tries this, please share the numbers! ). But I do notice a difference in how "close" the smoke is with pipes of longer or shorter stem length. Something to contemplate on the next bowl!

I have noticed actually that if with a longer stem more smoke kind of hangs out in the stem which I think might have a cooling effect. To illustrate what I mean by smoking hanging out in the stem, near the end of the bowl dump out the dottle that either just stopped or is close then draw on the stem. If I do that with a churchwarden the amount of smoke is certainly more voluminous then with standardish sized pipes. Same thing happens with filter pipes without a filter in but on a smaller scale.
Does that do anything. I don't know but it seems possible.